DOGS, CATS AND POULTRY 



lamp or lantern. (Fig. 99.) In one of these pieces cut an 

 opening about three or three and a half inches in diameter, 

 just high enough so that when the box is adjusted over the 

 lamp the opening is opposite the 

 light. Cut a piece of heavy black 

 cloth about four or five inches 

 square sufficiently large to cover 

 the opening in the side of the box. 

 In this cloth cut a circular opening 

 a little smaller than an egg and tack 

 the cloth over the opening in the 

 box. A very inexpensive but excel- 

 lent egg tester is now complete. 



On the evening of about the 

 fifth or sixth day take the eggs one 

 at a 'time carefully from the nest, 

 place them against the opening in 

 the cloth. The light shines through 

 the egg, and, being excluded by the 

 sides of the tester, enables you to 

 see whether or not the germ is de- 

 veloping. A fertile egg shows a dark, heavy spot (Fig. 100). 

 An unfertilized egg appears clear and watery (Fig. 101). 

 Place only the fertile eggs back in the nest and throw the 

 others away. 



Fig. 99. A Simple, Effective 

 Home made Egg Eester. 



Fig. 100. A Fertile Egg as Seen When 

 Placed Against the Opening of the Tester. 



An Infertile Egg. 



Keep a strict watch during the time the hen is setting, 

 so that accidents that may possibly happen can be promptly 



