Be it enacted by the Senate and House of Representatives of the Philippines in Congress assembled:

SECTION 1. Section three of Commonwealth Act Numbered One hundred and fifty-six, as amended by Commonwealth Act Numbered Four hundred and eighty-four, is amended further to read as follows:

"SEC. 3. In addition to the races mentioned in section one of this Act, Grand Derby races shall also be held on a day in the month of February or March of each year to be fixed by the Philippine Anti-Tuberculosis Society two months in advance.  On the day fixed, one 'Senior Grand Derby', for horses in excess of fifty-six inches in height, shall be run over a distance of one mile; and one 'Junior Grand Derby' shall be run over the same distance, for horses not over fifty-six inches in height. Only horses that have taken part during the previous year in the griffins' races held in accordance with this Act or in the Sweepstakes races, may participate in the Grand Derby races. Horses that will take part in the Grand Derby races must be registered thirty days before the date fixed for its celebration.

"The other races of said day shall, be ordinary races in which serial horses may participate."

SEC. 2. This Act shall take effect upon its approval.

Approved, June 18, 1948.