igii] A. R. Rose 223 



the amount required by the cow. In cases of this kind, considerable 

 care mitst be exercised in choosing the subject and adjusting her 

 to the experimental rations, because the goat, Hke the cow, f requently 

 loses appetite under nnusual conditions. Aside from this, the goat 

 is no more irritated by confinement than the dog and, unhke the cow, 

 does not require bedding. 



The dog cage has been developed into an admirable piece of 

 apparatus but, not having been designed for the goat, would not be 

 suitable for quantitative work on the goat because of the differences 

 in bulk and friabihty of the feces of these two types of animals. A 

 special cage was, therefore, designed to meet the requirements of 

 the work at this Station, where goats are used in a study of phytin 

 metabolism. These requirements seemed to be : 



1. Reasonable comfort for the animal. 



2. Adequate feeding with a minimum amount of waste. 



3. Complete removal of urine and feces from the cage. 



4. Separation of the urine and feces without contamination of 

 one by the other. 



5. Easy access for milking. 



The cage to be described has fulfilled the above conditions. It 

 consists essentially of an elevated wooden box, with side gratings 

 in the upper part to admit light and air. The major portion of one 

 side Swings from the top by means of hinges, and thus forms a 

 door (/) for the admittance and removal of the goat, and for con- 

 veni^nce in milking. The goat is tied by a chain attached to the 

 side wall in the front of the cage, to keep her from turning around. 

 The floor consists of a screen made of heavy wires sufficiently far 

 apart to let all waste pass through, without the hoofs of the animal 

 being caught in the meshes. Under this screen, at the front end, is 

 a pan to collect any food that may be dropped in eating. Under the 

 rest of the floor is a device for separating urine and feces, made 

 of galvanized sheet iron and comprising two parts, the hopper and 

 the urine pan, which connect with separate receptacles on the floor. 



The cage is simple in construction. It was made by local car- 

 penters with the aid of a tinsmith, at a cost of $37.00; occupies a 

 floor Space of two by four feet, Stands seven feet high, and can be 

 easily carried by two men. Four pieces of 2'' X 4'' pine constitute 



