SECTION 1. Section two of Act Numbered One hundred and forty, entitled "An Act defining the judicial districts of the Philippine Islands, proscribing the salaries of the judges thereof, and the limes when and the places where terms of Courts of First Instance shall he held in the several districts," is hereby amended by substituting in lieu thereof the following:
"SEC. 2. The annual salaries of the judges of the Courts of First Instance for the several districts shall be as follows, payable monthly:
"For the First, Second, Thirteenth, and Fourteenth Districts, four thousand dollars.
"For the Third, Fourth, Fifth, Sixth, Seventh, Eighth, Ninth, Tenth. Eleventh, and Twelfth Districts, five thousand dollars.
"For the District of Manila, five thousand five hundred dollars."