24There shall be exempted from all requirements of this Part of this Schedule—
(a)any of the following in a quantity of less than half a pound, that is to say, distemper and paste paint,
(b)bird seed in a quantity of less than four ounces, and other seeds in a quantity of less than half an ounce,
(c)nails in a quantity of less than half an ounce, and
(d)any other goods in a quantity of less than one ounce.