THE DAIRY.

Globe, Volume XXIII, Issue 2178, 17 February 1881, Page 4

THE DAIRY.

MODES OF SETTING MILK FOR CBEAM RISING. If two vessels of milk of 80deg. and of the same depth and quality, are set in a room that has an even temperature of SOdeg.—one being cooled to 50deg. before setting, and the other not—the vessel whioh is cooled will not throw up oream so rapidly nor so perfectly os the one which is not used before setting, because the former receives no benefit from an _ increased d iff eronoe between the specific gravities of the milk and oream by reason of a falling temperature. If, after the oooled milk has stood at SOdeg. until the cream ceases to rise, it is warmed, and then set again in a room of SOdeg., or if, without warming, it is set in a colder room, more oream will rise, 1-ieoause of the falling temperature that will in either case follow. The same result would bo obtained, but in a feebler degreo, if the milk whioh was not cooled before setting were treated in the same way, provided it was set shallow, say 2in deep in the first place. Soaring in mind that tbe warmer the milk is kept, up to a cortain point, tho sooner it spoils, 65deg. is a high temperature to set milk in ; yet milk set 2in deep at 65deg. will throw up its oream quiokly and perfectly when it would not do so if set at SOdeg., because in the latter case it would too soon fall to the standard of the room and cease to derive any advantage from a falling temperature. If we should set warm milk in vessels Gin deep in a room at 60d0g., it would take the oream so much longer to come, through that increased depth, and it would remain warm so much longer, that the milk would spoil before it had all risen. But let the deep vessel be placed in a cool room, say SOdeg., and the result would be altogether different. Unlike the shallow milk in the cold room, the increase of depth and bulk will so muoh prolong the time of cooling that the oream will all, or very nearly all, rise before the milk has dropped to the temperature of the room.—" Dairy Farming."