140 



EGG FARM. 



ted lines in Fig. 46 indicate the floors, A, A, which fol- 

 low the inclination of the driveways until the level space, 



B, is gained at the center, where is a trap, (7, through 

 which the earth falls into a hopper-shaped chamber, as 

 mentioned on Page 32. For filling the corners there are 



