The Journal of 
HEREDIT 
A monthly publication devoted toPlant,ireding 
Animal Breeding and. Eugenics 
o, 
‘3 
MARCH, 1920 
Vol. XI, No. 3 
A DISORDER OF COTTON PLANTS IN CHINA 
BRACHYTIC CULMS 
SWINE, SHEEP AND GOATS IN THE ORIENT 
INBREEDING AND OUTBREEDING 
NATURAL WHEAT-RYE HYBRIDS 
WORLD-POWER AND EVOLUTION 
~ ORGAN OF THE 
AMERICAN GENETIC:ASSOCIATION 
WASHINGTON - D.C. 
Printed for Circulation among Members only 
Acceptance for mailing at the special rate of postage provided for in section 1103, Act of October 3, 1917, 
authorized December 20, 1918. 
