SWINE 321 



bor rats, which not infrequently kill young pigs. A dou- 

 ble trough may supply each pair of pens. Young pigs 

 should have their own troughs outside the main pens. 



RACK FOR FEEDING HAY TO HOGS ' 



Lighting and ventilating hog-houses. It is not un- 

 common to find hog-houses that cost several thousand dol- 

 lars built almost without windows or other means of admit- 

 ting light, air and sunshine. Other houses are built with 

 windows in unfavorable positions, so that the sunlight can 



