INFECTIOUS SINUSITIS 809

diet containing 20 % sardine meal. One group was later fed the diet supplemented with raw decorticated cottonseed as the source of approximately 0.026 % free gossypol, and the other group was fed the unsupplemented diet. Data were obtained on the hatchability of the eggs of the individual pullets in the different groups, and on discolorations attributable to gossypol in the yolks of their fresh eggs and eggs that were held in cold storage for three or four months. The data show that the gossypol in the diets was not inactivated by the amino groups in the four compounds or by any component of the sardine meal, at least not to a sufficient extent to counter-DELAPLANE (1949) suggested that the virus of a chronic respiratory disease of chickens and the virus.of infec-tious sinusitis of turkeys were identical. Johnson (1951) reported the isolation of an agent from so-called "air sac colds" of chickens that could not be differenti-ated from the virus of infectious sinusitis of turkeys. Working with infectious sinusitis of turkeys in California, Hinshaw (1943) stated that, he could not produce the dis-ease in chickens but was successful in transmitting the disease back to turkeys act the unfavorable effect on yolk color or hatchability