Artificial Mothers' Milk. 



bottles. E is a metal arm or bracket to carry the 

 bottle, into which the thermometer clips to register 

 the temperature of 

 the milk in the bot- 

 tles during steriliza- 

 tion. A second ther- 

 mometer, F, is ne- 

 cessary to show the 

 gradual heating of 

 apparatus. This is 

 a most necessaiy pre- 

 caution, w i t h o u t 

 which, considerable 

 breakage of bottles 

 is unavoidable. The 

 steam enters at S, 

 ascending by the 

 central tube D, and 

 passes out on to the 

 shelves by numerous 

 holes. Through T 

 cold air can be forced 

 into the apparatus, 

 this tube connecting 

 with the ice house. 

 G is an exhaust pipe 

 for carrying off the 



, , , . Fig- 18-BLACK FOREST STERILIZER. 



air at the beginning 



of the operation, and is used again later when the 



required heat and pressure have been attained, so that 



