INDEX 



Abortion, 120. 



a cause of sterility, 120. 



agglutination test for, 128. 



contagious, 123. 



diagnosis of, 127. 



treatment of, 124. 

 Acquired characters, 157-160, 162. 



examples of, 162. 



influenced by food supply, 162. 

 Acquired diseases, 180. 

 Age and fecundity, 96. 



of poultry affects fertility, 96. 



of ram influences fertility, 94. 



of sheep influences fertility, 93. 



of swine influences fertility, 91. 

 Age factor in animal-breeding, 271. 

 Agglutination test for contagious 



abortion, 128. 



Anaphase in cell division, 12. 

 Arkell, 187. 



Artificial insemination methods, 44. 

 Asexual reproduction, 16. 

 Ash in ration, effect on foetus, 263. 

 Atwood, 94. 



Bachhuber, 50. 



Barrenness, see also sterility, 119. 

 Bateson, 210. 

 Beard, 76. 



Beinn Bhreagh flock, fertility of, 99. 

 Bell, 99. 

 Berberrich, 89. 

 Birth, number of young, 85. 

 Birth weight of lambs, 262. 

 Bitch', genital organs of, 32. 

 Blending inheritance, 135. 

 Blue-gray cattle, 247. 

 Border Leicester sheep, 87. 

 Boyd, 249. 



Breeding prematurely decreases 

 size, 272. 



Breeding season, 62. 



dioestrum, 55. 



metoestrum, 55. 



oestrum, 55. 



prooestrum, 54. 

 Brooks, 134. 



Brown-Sequard experiments, 208. 

 Brull, 127. 

 Burbank method, 302. 



Calcium in rations for pregnant 



swine, 264. 

 Castle, 194-294. 

 Castration, 22. 



influences secondary sexual char- 

 acters, 186. 

 Cattalo, 250. 

 Cell, 1. 



contents, 4. 



division, 8, 9, 10, 11. 



germ, 2. 



growth, 7. 



structure, 4. 



theory, the, 1. 



the physiological unit, 3. 

 Cell division a cause of variation, 



210. 



Characters correlated with fertility, 

 102. 



originate in germ-plasm, 195. 

 Chillingham cattle, 224. 

 Chromatin, 6. 

 Chromosomes, 12, 13, 135. 

 Cole, 50. 



Color-blindness, 188. 

 Community breeding, 299. 

 Connaway, 128. 

 Contagious abortion, 123. 



complement fixation test, 128. 



diagnosis of, 127. 



treatment of, 124. 



305 



