I9II] A. R. Rose 225 



(L) thirty inches long, twenty-one inches wide, and eighteen inches 

 high. This frame sHdes readily on two Strips of lumber (2" X 4" 

 pine) nailed to the inner sides of the legs twenty-seven inches from 

 the floor, so that the hopper is easily accessible for cleaning. These 

 Strips are long enough to extend about twenty inches beyond the 

 legs, front and back, so as to form convenient handles for lifting 

 and carrying the cage. 



The hopper (M), eighteen inches deep and narrowing to an 

 opening eight by ten inches, joins a trough (N), the bottom of 

 which is in a continuous line with the rear side of the hopper. This 

 trough is eight inches wide at the bottom, and fourteen inches wide 

 at the top for the first eighteen inches, and then tapers gradually for 

 sixteen inches, to a semicircular open end, three inches in diameter. 

 The v/alls of the trough are soldered firmly to the sides of the 

 hopper. Adjoining the hopper, the bottom of the trough is cut 

 away for the firct eighteen inches, and into this opening are soldered 

 twenty-six parallel wires, fastened to the bottom of the trough at 

 one end, and to the lower edge of the rear side of the hopper at 

 the other. Six inches from each end of the wires, a narrow strip 

 of sheet iron is soldered across them, to keep them rigid. The 

 düng pellets roll down the trough over the grating thus formed in 

 the bottom of the trough, but the urine flows through into the 

 pan (P) beneath, and the drops running down the wires are arrested 

 by the crosswise Strips and directed into the pan. The trough 

 is supplied with a removable cover extending beyond the lower end 

 and at that point is bent downward, to prevent the pellets from 

 bounding out and scattering over the floor. 



The urine pan (P) is held in place directly under the opening 

 of the trough by means of hooks and eyes, so as to prevent loss 

 by spattering. The pan is two inches deep, and in the upper part, 

 under the opening, is ten inches wide. Below this, the sides con- 

 verge to form a spout with an open end two by two inches. 



The urine receptacle (F) Stands on the floor beside the one pro- 

 vided for the düng (E), and in order that the spout may discharge 

 into it, a slight bend to the right is made in the urine pan twenty- 

 two inches from its Upper edge. 



While the cage herein described may seem crude in some 



