A study of the growth of the alimentary tract of the young cockerel.

1. The growth of the alimentary tract of male domestic fowl has been described from measurements of the dry weight of the whole and component parts of the tract from hatching to 10 weeks of age. 2. Quadratic regression equations were derived to express the growth of the birds and the growth of their alimentary tracts. 3. From hatching to 2 weeks there were marked alterations in the proportions which the different parts represented of the size of the whole tract.