524 The Ohio Naturalist. [Vol. IX, No. 7, 



Meeting of the Biological Club. 



Orton Hall, February 1, 1909. 



The club being called to order by the President, Miss Freda 

 Detmers, the minutes of the previous meeting were read and 

 approved as read. 



The address of the evening was by Dr. M. B. Lamb, Asst. 

 State Veterinarian, his topic being the Control of Hog Cholera by 

 Serum Immunization. Serum immunization for the control of 

 hog cholera has been developed by the Bureau of Animal Indus- 

 try at Washington, D. C, and extended by the states. Exper- 

 imental work in Ohio has been carried on at Reynoldsburg, 

 where 2,000 doses of protective serum have been produced and 

 700 head of hogs treated with excellent results. This protective 

 serum is probably anti-bacterial as well as antitoxic. To get 

 the serum 500 cu. cc. of virulent blood for each 100 lbs. weight 

 is injected through a vein in the ear. The animal is then bled 

 from the tail and from a 150 lb. animal 150 doses of the protec- 

 tive serum is secured. The blood is defibrinated and a small 

 amount of antiseptic added. The dose is of virulent blood 

 2 cu. cc, serum 20 cu. cc. for each 50 lbs. weight. This is sup- 

 posed to last for about four months, and is known as the serum 

 simultaneous method. Where a herd has already become 

 infected, the serum alone is used. The cost of producing the 

 serum per maximum dose for a 50 lb. animal is about 32 cents. 



In the discussion that followed Dr. D. S. White, Prof. F. L. 

 Landacre and Dr. Chas. B. Morrey took part. 



Miss Mary Edmonds and Miss Frances Freeman, advanced 

 students in botany, were elected to membership. Prof. Osborn 

 suggested a commemoration of the centenary of Chas. Darwin's 

 birth and moved that the officers of the club be authorized to 

 arrange a special program. 



Arthur H. McCray, Secretary. 



Date of Publication, May 4, 1909. 



