No. 4.] MILK AND CREAM. 365 



by steam). The bottles can be removed, while warm, from 

 the oven, and immediately filled. 



Milk or cream thus treated will have but a slight cooked 

 taste, and this will almost entirely disappear in cooling. Its 

 chemical composition is not changed, nor its digestibility 

 decreased. It is claimed, on good authority, that pasteurized 

 cream will make a butter superior to that from unheated 

 oream. This is probably due to the fact that pasteurization 

 destroys obnoxious germs, and permits, by inoculation, the 

 development of those favorable to a good quality of butter. 

 Pasteurization causes both milk and cream to become thinner 

 than the normal products, with same percentage of fat. This 

 diminished body is due to the fact that the heat causes the 

 fat globules, which are in clusters or clots, to break apart 

 and become more evenly divided throughout the milk. 

 Babcock and Russell have overcome this by the addition of 

 so-called viscogen to the cream.* 



Yiscogen is prepared by taking two and one-half parts by 

 weight of cane sugar and dissolving it in five parts by weight 

 of water. One part by weight of quick lime is gradually 

 slaked in three parts by weight of water. This milk of lime 

 should be slowly poured through a strainer into the sugar 

 solution, frequently stirred, allowed to settle for several 

 hours, and the clear liquid poured or siphoned off and pre- 

 served in well-stoppered bottles. One part of this solution 

 is slowly added, with constant stirring, to one hundred and 

 fifty parts of cream. (See Bulletin 54 for further details.) 

 While the addition of this material might be considered as 

 contrary to law in case of milk, it hardly seems possible that 

 there could be any objection to its use in cream. It cer- 

 tainly cannot be considered as objectionable from a sanitary 

 stand-point. In case there should be objections raised 

 against its use, cream thus treated could be designated by 

 some particular brand, such as visco-cream, or the like. 



• Bull, oi, Wisconsin Experiment Station. 



