80 



HATCH EXPERIMENT STATION. 



[Jan. 



diameter and from 3 to 6 inches apart, with two or three 

 rows of such holes extending around the circumference of 

 the pipe. Some of these appliances are not made up into 



C 



C 



id 



h 



n 



v n 



- 1 



;p 



=] 



w 



h 



i 



:p 



Figs. 1 and 2. — Showing types of sterilization apparatus : h, header; ?i, nipple ; ?/', wooden 

 plug; i, steam inlet; p, pipes. Both appliances are 20 feet long and about 8 feet wide. 



permanent frames, but are in sections, easily put together 

 or taken apart, and so constructed that they can be readily 

 extended into any length or width desired. . These frames are 

 provided with headers placed transversely, which are pipes 

 of larger diameter, containing perforations, and nipples are 



