SECTION 1. Every transmission by virtue of inheritance, devise, bequest, gift mortis causa, or advance in anticipation of inheritance, devise, or bequest shall be subject to the following tax:
(a) When the surviving spouse, a legitimate, recognized natural, or adopted child, or legitimate descendant of any of them, is the beneficiary, one per centum on the inventoried property if not exceeding fifty thousand pesos; one and one-half per centum, upon the inventoried property if it is of the amount of fifty thousand pesos and not in excess of two hundred and fifty thousand pesos; two and one-half per centum, upon the inventoried property if it is of the amount of two hundred and fifty thousand pesos and not in excess of five hundred thousand pesos, and four per centum, upon all inventoried property in an amount in excess of five hundred thousand pesos;
(b) When either of the legitimate parents of the deceased, or a legitimate brother or sister of the same, or the father or mother who had recognized him as a natural child, is the beneficiary, there shall be collected the same tax fixed in the paragraph next preceding, with an increase of one hundred per centum;
(c) When other relatives not included in the two next preceding subsections are beneficiaries, there shall be collected the tax fixed in subsection (a) with an increase of two hundred per centum;
(d) When strangers are beneficiaries, there shall be collected the tax fixed in subsection (a) with an increase of three hundred per centum.