32 Diseases of Poultry 



The crematory is suflBciently large to take care of all the 

 needs of a plant carrying 1000 head of adult stock, raising 

 3000 to 4000 chickens annually, and in which a good deal of 

 anatomical and physiological research is going on, necessitat- 

 ing a much larger amount of waste animal material than the 

 ordinary commercial poultryman would have. Therefore, 

 it is doubtful if it would be necessary in any but the very 

 largest commercial plants to build a larger crematory than 

 the one here described. 



In building this an excavation was first made for the base, 

 in which a lot of loose stones and gravel were placed, in 

 order to secure adequate drainage below the cement. On 

 top of this the cement base and fire box were made. 



This base consists essentially of a rectangular box made of 

 cement, open at the top, and with a small opening in front 

 through which the fire is fed and which serves as a draft. 

 The walls are about 6 inches thick. The outside dimensions 

 of the fire box base are 3 feet 4 inches by 2 feet 6 inches. 

 The inside dimensions of the fire box are 2 feet 3 inches by 

 1 foot 9| inches by 1 foot 4 inches. Across the top of 

 the fire box there were laid, while the cement was still soft, 

 some old grate bars from a small steam boiler, which had 

 been discarded and thrown on the dump heap. These were 

 set close together and held firmly in place when the cement 

 hardened. Theyformthe grate on which the material to be in- 

 cinerated is thrown . These old boiler grate bars, besides cost- 

 ing nothing, had another advantage ; namely that of their 

 thickness and weight. When they become thoroughly heated 

 from the fire below they will hold the heat for a consider- 

 able tiine, charring and burning the animal material above. 



The incinerating chamber proper was made from gal- 

 vanized iron by a local tinsmith. This consists of a rec- 

 tangular box having the following dimensions: Length 2 

 feet 2 inches; width 1 foot 10 inches; height 1 foot 6 



