25 



Figure 4. 



A strong contrast in head types of cockerel and capon, showing the 

 influence of unsexing on change in type. 



(Fig. 5.) Here we have pictures of the eggs and the chickens I 

 spoke about on a previous page in the experiment where eggs were 

 put into the incubator to be tested for the vigor of their germs. At 

 the end of seven days they were tested for high and low vitality, and 

 at the end of three weeks time records were taken and photographs 

 made of the chickens actually hatched. Here on the left are the eggs 

 selected for low vitality germs, below are the chickens hatched, and 



Figure 5. Illustration showing the eggs and the chickens in the hatch where eggs 

 were tested on the seventh day and selected according to the vigor of the germs. 



here to the right are the eggs from high vitality germs and below 

 are the large number of strong chickens hatched. Seventy per cent 

 of the eggs hatched that were selected for strong germs, and only 

 thirty-three per cent of the eggs hatched that were selected for weak 

 germs. Chickens were strong from eggs having strong germs and 

 weak when hatched from eggs having weak germs. 



