(c) In addition to the foregoing payments, if the injured loses both feet or both hands, or one foot and one hand, or both eyes, or one eye and one foot or one hand, he shall receive, during the full period of five years, 40 per cent. of the wages which he was receiving at the time of such accident; or if he loses one foot, one hand, or one eye, the additional compensation therefor shall be 15 per cent. of his said wages; or if he be otherwise maimed or disfigured, then, for such maiming or disfigurement, during the time it shall continue, he shall receive therefor such proportion of 40 per cent. as such maiming or disfigurement bears in depleted ability in the employment to the relative loss of the members specified herein; _Provided_, That in no case shall all of the payments received herein exceed in any month the whole wages earned when the injury occurs, nor shall the said 40 per cent. when all received, or any portion thereof, and the said 60 per cent. when all received, or any portion thereof, continue longer than to make all sums aggregate $5000.
Sec. 4. _Repeal of other liabilities._ The right to compensation and the remedy therefor, as herein specified, shall be in lieu of all other causes of action for such injuries and awards upon which they are based as to all persons covered by this act, whether formerly authorized or allowed by, or as the result of, either state, statute or common law, and no other compensation, right of action, damages or liability, either for such injuries or for any result thereof, either in favor of those covered by this act or against such employer based on state law, shall hereafter be allowed for such injuries to any persons or for any of the injuries covered by this act so long as this law shall remain in force, unless, and then only to the extent, that this law shall be specifically amended.
Sec. 5. _Conditions precedent to right of recovery._ That as a condition precedent to such right to compensation, such employe or the legal representatives thereof, as the case may be, shall within ten days after knowledge of such injury, unless there be valid excuse for delay and then immediately after such excuse is removed, cause a written notice thereof in substantially the form designated in paragraph ---- (form to be provided) of this act, to be served upon the said employer by leaving a copy thereof addressed to the employer with the person in charge of such employe while he was so working, if that person is still in said employ, or with some superior agent, officer or person in charge of said business at any office thereof within this State in the same way that a summons can now be served; and in case of a dispute between the employe and the said employer, or in case of the failure of such employer and employe to agree upon such claim or in case of failure or refusal of such employer to pay, such employe shall submit his claim for compensation hereunder, both as to the nature of the injuries and the amount to compensate therefor under this act, to a board of three arbitrators, as hereinafter specified, in substantial compliance with the form contained in section ---- hereof.