80 



HATCH EXPERIMENT STATION. [Jan. 



diameter and from 3 to r> 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 



Figs. 1 and 2. — Showing types of sterilization apparatus : ;>, header; n, nipple; ?(-, woodeii 

 plug; i, steam inlet; /), 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 



