120 



CARNEGIE INSTITUTION OF WASHINGTON. 



Methods of Rearing Chicks. 



In rearing chicks we have until recently suffered from a mortality 

 of over 75 per cent. By applying the methods worked out at the 

 Storrs Agricultural Station for reducing white diarrhea (namely, by 

 keeping chicks in the incubator three days after hatching) mortality 

 from white diarrhea has been reduced to about 5 per cent. We still 

 had a large number of deaths at about 4 up to 8 weeks, apparently 

 from coccidiosis. By increasing the area of range per chick the 

 density of the infection of the ground is diminished and the death- 

 rate vastly decreased. Dr. H. D. Goodale employed this method 

 here in 1912 and has continued its use at Amherst in 1913, with good 

 results. 



STATISTICAL SUMMARY. 



Poultry. — Of chicks, 655 were hatched. 



Finches. — Of canaries, 76 were hatched; 28 survived infancy. 



Sheep. — Twenty-six sheep were born. 



Plants. — No estimate has been made of the many thousand plants 

 examined by Dr. Harris. The number and extent of cultures grown 

 in connection with Dr. Shull's investigations are indicated by the 

 accompanying table. 



