755 in casumen bread being nearly double those contained in ordinary bread. CASUMEN BISCUITS. (W. DrNMoRE AND SON, MIDLAND BISCUIT WORKS, SOUTH WIGSTON, NEAR LEICESTER.) It is stated that these biscuits contain 10 per cent. of soluble milk casein (casumen). This statement is completely confirmed by our results of analysis which showed the presence of 19'33 per cent. of proteid. Since biscuits made , with ordinary flour contain about 10 per cent. of proteid, the addition of absolute casein to the bread amounts to 9'33 per cent.