Section 1003 - Time of taking effect1. The provisions of sections three hundred fifty, three hundred fifty-one, three hundred fifty-two, three hundred fifty-three, three hundred fifty-four, three hundred fifty-five, three hundred fifty-six, three hundred fifty-seven, three hundred fifty-eight, three hundred fifty-nine, three hundred sixty, three hundred sixty-one, three hundred sixty-five, three hundred sixty-seven, three hundred sixty-nine, three hundred seventy-one, three hundred seventy-two, three hundred seventy-three, three hundred seventy-four, three hundred seventy-five, three hundred seventy-six, three hundred eighty and three hundred eighty-one shall take effect July first, nineteen hundred fifty.2. All other provisions of this chapter shall take effect January first, nineteen hundred fifty-one.