... e yolk alone is to be used. Ten eggs are supposed to weigh a pound, and, unless they are unusually large or small, this is quite correct. Eggs contain from 72 to 84 per cent. of water, about 12 to 14 per cent. of albuminoids. The yolk is quite rich in fat; the white deficient. They also contain mineral matter and extractives. To ascertain the freshness of an egg without breaking it, hold your hand ...