5 2 4 
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. 
