In this case, which arises under the Workmen’s Compensation Act of Alaska, two questions are presented on appeal. The first of these is whether, under the circumstances of this case, the Alaska Industrial Board had jurisdiction to reopen a previously-rejected claim for a temporary total disability award. The second is whether, if the board had such jurisdiction, it correctly granted such an award for injuries arising from the same accident in which a lump-sum award for permanent total disability had previously been granted.
The following facts, essential to a consideration of these questions, are not in dispute. On September 21, 1950, Carl E. Jenkins received serious injuries when he came into contact with a high voltage electric line while in the course of his employment. His employer was Chugach Electric Association which had insured its liability under the act with General Accident Fire & Life Assurance Corporation.
As a result of the accident, it was necessary to amputate Jenkins’ left arm near the shoulder, his right leg below the knee, and four toes of his left foot. These amputations were made in a series of three surgical operations, the last of which was performed on October 28, 1950. The left foot *188failed to heal and was still under treatment at the time of his doctor’s last report, on December 17, 1953.
Following this injury, his employer and the insurance company began paying Jenkins compensation for temporary total disability, under the “Temporary Disability” provision of Alaska Comp.Laws Ann., § 43-3-1 (1949). This compensation was paid at the rate of $95.34 per week, for approximately thirty-eight weeks.
On July 25, 1951, the employer and the insurance company reversed their position. They decided that Jenkins had been permanently and totally disabled since October 28, 1950, when the last amputation (the right leg) occurred. Accordingly, they granted him a lump sum of $8,100, as a permanent total disability award, but deducted from it the $3,645 which had been paid to Jenkins as temporary total disability. A check in the sum of $4,455 was sent to Jenkins, on July 25, 1951, for the purpose of closing the claim.
On August 14, 1951, Jenkins filed with the board, on its printed form, an application for adjustment of claim. The evident purpose of this application was to claim continuing benefits for temporary disability, despite the allowance of a lump-sum award for permanent total disability.1 It was so treated by the employer and insurance company, which filed a joint answer denying that temporary disability continued.
It was also so treated by the chairman of the board, who, on November 12, 1952, filed a decision granting the application. It was held in this decision that temporary disability had continued since October 28, 1950. Jenkins was awarded the $3,645 which had been deducted from his lump-sum payment, and continuing temporary disability payments “until a medical end result is reached.”
*189On February 6, 1953, after review by the full membership of the board, the two members other than the chairman filed a decision vacating the chairman’s decision and award of November 12, 1952. It was held that, Jenkins’ condition having been rated as a total permanent disability on October 28, 1950, “no compensation for total temporary disability is thereafter payable.” He was, however, granted a temporary total disability award of $476.70, representing compensation for a period of thirty-five days prior to the operation on October 28, 1950. Jenkins did not seek a district court review of this award, as he might have done under Alaska Comp.Laws Ann., § 43-3-22 (1949).
On May 14, 1953, Jenkins wrote to the chairman of the board, requesting a copy of the decision of February 6, 1953. On November 10, 1953, Jenkins’ attorney wrote to the board, requesting that the claim be reopened. On November 21, 1953, Jenkins filed an application for adjustment of claim. He there stated that he was entitled to temporary disability until there was an end to disability through medical means. The employer and the insurance company answered contending that the decision of February 6, 1953, was res judicata, and that the board was without jurisdiction to reopen the claim.
The board, on January 8, 1954, filed a decision reversing its action of February 6, 1953, holding that a condition of temporary total disability existed on and after October 29, 1950, “no end medical result having been reached.” The employer and the insurance company thereupon instituted this action to set aside the board’s decision.
In granting judgment for plaintiffs, the district court held that the board was without jurisdiction to reopen the claim following its decision of February 6, 1953, from which no appeal was taken. Alternatively, it was held that an award for temporary total disability may not be granted for physi*190cal disability arising from the same accident in which an award for total permanent disability has been granted.
We will first consider the jurisdictional question which is presented.
The power and duty of the board with respect to the modification of compensation awards is governed by Alaska Comp.Laws Ann., § 43-3-4 (1949), quoted in the margin.2
Appellees contend that Jenkins did not file a claim, within the meaning of the proviso at the end of § 43-3-4, prior to the expiration of the three-year period specified in that proviso. In this connection, it is pointed out that certain medical reports relied upon by appellants as constituting such a claim were dated prior to the hearing resulting in the deci*191sion and award of February 6, 1953. It is further argued that Jenkins’ letter of May 14, 1953, does not constitute a claim or seek a rehearing. The letter of November 10, 1953, which his counsel filed with the board, and Jenkins’ application for adjustment of claim, filed November 21, 1953, were not filed within three years of the injury, which occurred on September 21, 1950.
Appellees’ argument is apparently based upon the premise that, in order to constitute a “claim” within the meaning of the proviso to § 43-3-4, the document must be filed subsequent to the decision establishing the lower rate of compensation. If this premise is correct, we would agree with appellees, that such a claim has not been filed within the statutory three-year period. The letter of May 14, 1953, constituting the only document filed subsequent to the decision and prior to the expiration of the three-year period, was a mere inquiry, and not a claim.
But we find nothing in the statutory language warranting the view that, to constitute a “claim” under this proviso, the document must be filed subsequent to the decision establishing the lower rate of compensation. The “claim” referred to in the proviso is not intended to serve the purpose of an application for rehearing. Under § 43-3-4, no such application need be filed, since the board is expressly authorized to review a prior decision “upon its own motion.”
All that the “claim” need contain is a request for an increased rate of compensation over that presently in effect. Jenkins’ application of August 14, 1951, amended on December 10, 1951, contained such a request. It was so treated by the employer and insurer in their answer, by the chairman in his decision of November 12, 1952, and by the board in its decision of February 6, 1953. Both the original and amended applications were filed within three years after the injury.
*192It is of no consequence that the board may actually have reopened the matter in response to Jenkins’ insufficient letter of May 14, 1953, or his tardy claims of November 10 and 21, 1953. Since the board had power to reopen the matter on its own motion, and since it did desire to reopen, the action taken is to be deemed a reopening on the board’s own motion.
We hold that Jenkins filed a timely claim for increased compensation, within the meaning of the proviso of § 43-3-4.
Appellees further contend that the board’s reviewing power under § 43-3-4 is limited solely to the adjustment of the rate of compensation where there is a change in the physical condition of the claimant within three years of the original injury. Appellees argue, and we agree, that the temporary total disability award here in question is not for a changed physical condition, but for a physical condition which has existed since the accident.
Appellees’ contention that there must have been a change in the physical condition of the claimant since the prior award is supported by a decision of the same trial judge, in Suryan v. Alaska Industrial Board, 12 Alaska 571.
We agree that § 43 — 3-4 provides a method whereby the board may reconsider a previous decision, for the purpose of awarding increased compensation to cover adverse phanges in physical condition subsequent to a prior award.3 We find nothing in § 43-3-4, or elsewhere in the act, however, which limits the power to reopen to cases involving changed physical condition. The words “and it shall after-wards develop” are broad enough to include not only chang*193es in physical condition, but the disclosure of errors of law in connection with the award.4
The immediately-following words, “that he or she is or was entitled to a higher rate [emphasis added],” add substance to this construction. The word “was” indicates that the period during which a claimant may be entitled to increased compensation includes the time between the injury and the earlier award. This negatives the idea that increased compensation must relate to changed physical condition since the prior award.
It is true that, in § 43-3-1 and in the proviso at the end of § 43-3-4, the word “develop” is used to indicate progression of physical disability. But this is because the word is there used in juxtaposition with the words “injury” or “disability.” These word combinations do not appear in the body of § 43-3-4, the language being “and it shall afterwards develop.”
Appellees next argue that the board’s decision of February 6, 1953, is conclusive and binding because no court proceedings to contest the decision were instituted within thirty days, as provided by § 43-3-22.
Under § 43-3-22, the award is conclusive and binding “as to all questions of fact,” unless tested in a court proceeding commenced within thirty days. The award for temporary total disability here in question involves no reconsideration of factual questions. It was known at the time of the prior award that Jenkins’ physical condition had not been stabilized. The granting, on reconsideration, of his *194claim for temporary total disability was not based upon a redetermination of facts, but upon a different view of the meaning of the statute. We need not now decide whether, despite § 43-3-22, the board is authorized, under § 43-3-4, to redetermine questions of fact.
Appellees’ final argument on the question of jurisdiction is that § 43-3-29, requiring claims to be filed within two years after the injury, barred the reopening of the claim. But, as before shown, the claim for increased compensation was filed on August 14, 1951, and amended on December 10, 1951, which dates are well within the two-year period. Hence, we need not decide whether the two-year period specified in § 43-3-29 governs in the case of reconsiderations, in view of the three-year limitation specified in the proviso to § 43-3-4.5
We conclude that the board acted within its jurisdiction and power in reopening this claim for the purpose of further considering Jenkins’ request for an award covering temporary total disability.
This brings us to the second principal question presented on this appeal. Where injuries, sufficient in themselves to constitute total and permanent disability, are the basis of the maximum award for such disability, may an allowance nevertheless be thereafter made for temporary disability based on the failure to heal of an additional injury concurrently sustained ?
*195The pertinent statutory provisions to be examined are the two paragraphs of Alaska Comp.Laws Ann., § 43-3-1 (1949), quoted in the margin.6
Appellants’ contention that a workman may receive benefit payments for “temporary” disability after he has been awarded a lump-sum payment for total and “permanent” disability resulting from injuries received in the same accident seems to involve a contradiction in terms. Appellants seek to avoid this apparent contradiction by segregating the injuries arising from a single accident. Thus, if, after finding some injuries sufficient to meet the statutory definition of “total and permanent disability,” there are enough left over, when separately considered, to meet the statutory definition of “temporary disability,” appellants believe the workman is entitled to both awards.
This reasoning might be permissible if we were concerned with permanent and temporary “injuries,” as that word is used in the statute, rather than “disabilities,” as that word is used in the statute. One may have a permanently *196injured arm and a temporarily injured leg. But if, by reason of certain injuries, a workman is, under the statute, totally and permanently disabled from doing any work, it follows that there is, in legislative contemplation, no remaining ability to work which can be affected, either permanently or temporarily, by other injuries received in the same accident.
Appellants argue that the statutory schedule of payments for “total and permanent disability” represents mere arbitrary indemnities, not necessarily associated with loss of earning power. They contend that temporary disability compensation, on the other hand, is directly and solely related to loss of earning power, and thus is compensation for loss of wages during the healing period. Hence, appellants assert, there is no inconsistency in allowing payments for temporary disability after an award has been made for total and permanent disability.
The basic principle of all workmen’s compensation laws is that benefits relate to loss of earning capacity and not to physical injury as such. In the case of the loss of certain members, total and permanent loss of earning power is conclusively presumed for the purpose of awarding compensation under the act.7 The individual receiving such an award may actually be able to continue some work, and hence be, in fact, not totally and permanently disabled. But the fact that some ability to work remains is not to be taken into account in determining whether such an individual is entitled to the lump-sum award.
We think it must logically follow that this conclusive presumption cuts both ways. In fixing the compensation for certain injuries, defined in the act as constituting total and permanent disability, sustained in an accident, actual re*197maining ability to work is to be disregarded for all purposes —those which are favorable to the workman as well as those which are unfavorable. Under the presumption, whatever the facts may be, there is no remaining ability to work, and therefore no foundation for temporary disability benefits. There is likewise no foundation for an additional partial disability award which, under appellant’s theory, would otherwise be available if it became necessary to amputate Jenkins’ left foot. The award for total permanent disability resulting from loss of members is thus intended as a maximum award for disability resulting from injuries received in an accident.
Appellants call attention to the second sentence of the quoted paragraph relating to temporary disability. It is there provided that, in all cases “where the injury develops or proves to be such” as to entitle the employee to compensation under some provision of the schedule “relating to cases other than temporary disability,” the amount so paid or due him under the temporary disability schedule shall be in addition to the amount to which the employee shall be entitled under such other or permanent disability schedule. Cases of permanent injury are “cases other than temporary disability,” within the meaning of this statute. Libby, McNeill & Libby v. Alaska Industrial Board and Lathourakis, 9 Cir., 191 F.2d 262, certiorari denied 1952, 342 U.S. 913, 72 S.Ct. 359, 96 L.Ed. 683.8
As applied to the facts of this case, the sentence just noted does not authorize the payment of benefits for temporary disability after the workman has been found to *198have a permanent total disability. It means only that a lump-sum award for permanent total disability shall be in addition to any benefits theretofore paid or due for temporary disability. If an injury which causes “temporary” disability thereafter develops or proves to be a “total” disability, it is no longer a “temporary” disability.9
The district court was therefore correct in holding that, after the disability was determined to be total and permanent, Jenkins was no longer entitled to monthly benefits for temporary disability.
In view of the ruling just stated, we feel constrained to discuss one more aspect of this case. The determination that Jenkins’ disability was total and permanent was made by the board in July, 1951. The board, however, attempted to relate back this determination of his status to October 28, 1950, when the second member was amputated. The board took this action under the mistaken view that any payment for temporary disability was improper. The result was that there was deducted from Jenkins’ $8,100 award for permanent total disability the thirty-eight weekly payments he had received as temporary disability payments since the October date. As before indicated, the total sum so deducted was $3,645, leaving Jenkins but $4,455 of his lump-sum award. This action was confirmed by the board’s decision of February 6, 1953, except that an award of $476.70 was made for temporary disability benefits due prior to October 28, 1950.
In our view, the temporary disability payments should not have been deducted from the lump sum to which Jenkins became entitled by virtue of being permanently and totally disabled. We say this notwithstanding the established fact that the loss of members warranting a classification of total *199and permanent disability unquestionably occurred on October 28, 1950.
Our opinion on this point is governed by the paragraph of § 43-3-1 which relates to temporary disability. It is there provided that when the injury develops or proves to be such as to entitle the employee to compensation under some other provision of the schedule (in this case, the provision relating to total and permanent disability), the amount so paid or due him under the temporary disability schedule shall be in addition to the amount to which he shall be entitled under such other or permanent disability schedule.
We have heretofore interpreted the words “and it shall afterwards develop”, as used in § 43-3-4, to include not only changes in physical condition, but also the disclosure of errors of law in interpreting the statute. Section 43-3-1, now under consideration, uses these same quoted words plus the words “or proves.” The added words do not, in our view, affect the meaning to be attributed to this provision. We therefore construe this provision of § 43-3-1 in the same way the similar provision in § 43-3-4 has been construed.
Until July 25, 1951, when the employer and the insurance company reclassified appellant as totally and permamently disabled, he was entitled to receive the'temporary benefits which were being paid to him, because he was then classified as temporarily disabled. It follows that, under the paragraph of § 43-3-1 to which reference has been made, the lump-sum payment awarded on July 25, 1951, should not have been reduced by the sum Jenkins had received, or there was then due him, as a temporary disability award.10
*200There is good reason for this statutory requirement. Benefits for temporary disability are determined as a percentage of average daily wages, and are paid at the time compensation is customarily paid for labor performed at the employer's plant. See § 43-3-1. Such benefits, therefore, are considered as income, and are normally treated and expended as such by workmen covered by the act. Lump-sum payments for permanent total disability, on the other hand, are intended to represent capitalization of future earnings.
Hence, if a workman should rely upon the classification of a disability as temporary and treat payments so received as income, the deduction of those payments from his award for permanent disability would leave the injured workman with a sum much less than what the legislature intended as a capitalization of his future earnings.
We accordingly hold that the lump-sum payment of $8,-100 should be in addition to the $3,645 paid for temporary disability on and after October 28, 1950, and in addition to the $476.70 award overdue for temporary disability prior to October 28, 1950.
This deduction question was not presented in the trial court and was not argued in the briefs. It was dealt with to some extent during oral argument. Normally, we would not consider and determine a question not presented in the trial court and in briefs. This case, however, has been pending for more than five years, thus rendering a remand undesirable. The point under discussion is a matter of public *201interest in connection with the administration of an important act having wide application. We have therefore considered it appropriate to depart from our usual practice, noted above, so that the case can finally be disposed of on the basis of this opinion.
The judgment is modified in accordance with the views expressed in this opinion, and in all other respects is affirmed.
An amended application was filed on December 10, 1951, correcting tbe figures originally given for total compensation received.
Alaska Comp.Laws Ann. § 43-3-4 (1949):
“Modification of compensation: Continuing jurisdiction: Effect of review upon moneys already paid: Limitation of time. If an injured employee [is] entitled to compensation under any subdivision or part of this schedule, and it shall afterwards develop that he or she is or was entitled to a higher rate of compensation under same or some other part of subdivision of this schedule, then and in that event he or she shall receive such higher rate, after first deducting the amount that has already been paid him or her. To that end the Industrial Board is hereby given and granted continuing jurisdiction of every claim, and said Board may, at any time and upon its own motion or on application, review any agreement, award, decision or order, and, on such review, may make an order or award ending, diminishing or increasing the compensation previously awarded, ordered, or agreed to, subject to the maximum or minimum provided in this Act. No such review shall affect such award, order or settlement as regards any moneys already paid, except that an award or order increasing the compensation rate may be made effective from date of injury, and except that if any part of the compensation due or to become due is unpaid an award or order decreasing the compensation rate may be made effective from the date of injury, and any payments made prior thereto in excess of such decreased rate shall be deducted from any unpaid compensation, in such manner and by such methods as may be determined by the Industrial Board; provided, however, that no compensation under such increased rate shall be paid unless the disability entitling the employee thereto shall develop and claim be presented within three (3) years after the injury.”
We so held in Hilty v. Fairbanks Exploration Co., 9 Cir., 82 F.2d 77, and Keehn v. Alaska Industrial Board, 9 Cir., 230 F.2d 712.
These words may also he broad enough to include the disclosure of errors of fact. However, in view of § 43-3-22, making a prior award conclusive and binding “as to all questions of fact,” unless court proceedings are instituted within thirty days, it is uncertain (and we do not decide) whether the board may reopen a claim for the purpose of reconsidering questions of fact.
An additional jurisdictional question has suggested itself to us. Under § 43-3-4, the board is given authority to reopen claims for the purpose of increasing or decreasing the “rate of compensation.” It may be that, in a strict sense, the granting of a temporary total disability award to one who has already received a permanent total disability award, is not an increasing of the “rate of compensation” of the original award. This question, however, was not discussed in the briefs or oral argument, and the answer is not so plain as to warrant us in dealing with its sua sponte.
The paragraphs of § 43-3-1 in question read:
“[Temporary disability.] For all injuries causing temporary disability, the employer shall pay to the employee, during the period of such disability, sixty-ñve per centum (65%) of his daily average wages. And in all cases where the injury develops or proves to be such as to entitle the employee to compensation under some provision in this schedule, relating to eases other than temporary disability, the amount so paid or due him shall be in addition to the amount to which he shall be entitled under such provision in this schedule.
“Payment for such temporary disability shall be made at the time compensation is customarily paid for labor performed or services rendered at the plant or establishment of the employer liable therefor and not less than once a month in any event.”
“[Loss of members as total permanent disability.] The loss of both hands, or both arms, or both feet, or both legs, or both eyes, or any two thereof, or hearing in both ears, shall constitute total and permanent disability and be compensated according to the provisions of this Act with reference to total and permanent disability.”
See 2 Larson, Workmen’s Compensation (1952 ed.) § 58.10.
Lathourakis was allowed and paid $2,005 ior temporary disability suffered prior to his condition becoming fixed into permanent disability. He then received a lump-sum award of $3,600 for fifty per cent permanent disability, and payments for temporary disability thereupon ceased.
Keehn v. Alaska Industrial Board, note 3, supra.
Libby, McNeill & Libby v. Alaska Industrial Board and Lathourakis, supra. It was there pointed out that the prior 1929 act did require the amount paid for temporary disability to be deducted from *200the award under other provisions of the act. This was changed when the present language was enacted in 1946.
The provisions of § 43-3-4 providing for the deduction of amounts already paid, and providing that a new award may be made effective from date of injury, relate to cases wherein a “higher rate of compensation” is awarded. When the employer and the insurance company decided to reclassify appellant as totally and permanently disabled, they were not awarding him a higher rate of compensation.