THE MOTHER HEN 



117 



inch in depth. In a good egg the line of demarcation be- 

 tween the air cell and the egg mass should always be clear, 

 sharp, and distinct. 



NATURAL HATCHING RECORD 



Nest No 



Date Hen No Breed 



No. Eggs set Kind 



Brief description of nest and method of management 



Result of Tests: 

 Seventh day . . . 

 Fourteenth day 

 Total 



Eggs Infertile 



Dead Germs 



Cracked 



Number vigorous chicks hatched 



Number chicks dead in the shell 



Per cent hatch of total eggs set 



Per cent hatch of fertile eggs left after first test 



A record should always be kept showing the results of 

 the egg test. At the end of each hatch this record should 

 give the number of eggs put in, the date when they were 

 set, the date when hatched, the number of vigorous chicks 

 hatched, the number of infertile eggs, and the number which 

 died in the shell. It will be useful for the pupils to refer to 

 in future years, and compare the results attained by present 

 and past experience. At hatching time the hen sticks pretty 

 closely to the nest, and as a uniform and rather high tempera- 

 ture is needed to bring the young out of the shell she should 

 not be disturbed or annoyed after the nineteenth day until 



