384 



EXPERIMENT STATION RECORD. 



[Vol. 43 



The prevention of goiter (bij*' neck) and hairlessness of n«'\vl)orii do- 

 mcstie animals, J. W. Kai-kus {Wonhiiintoii Sta. Pop. Bill. 117 (JHHI), pp. 3- 

 12, JUifi. 7). — A popular account is given of tlie nature and cause of tliis affec- 

 tion, witli recommendations for treatment based upon experiments conducted by 

 tlie station since 1915, results secured by experiment stations and institutions 

 of otlier States, and the results of the application of iodin treatment by prac- 

 tical stockmen. 



In order to prevent this condition it is recommended tliat all pregnant animals 

 in goitrous districts be treated by one of tliree methods described. Tlie lirst 

 consists of the internal administration of potassium iodid at the rate of 2 

 grains daily throughout tlie gestation period. The second consists of the appli- 

 cation of tincture of iodin to the animal's skin, it being most easily applied by 

 IDouring the tincture of iodin on the animal's back once every two weeks, one 

 teaspoonful being sufficient for mares and cows and half that amount for 

 smaller animals. It is pointed out that the iodin should not be poured on the 

 same spot each time, since it will blister the skin and cause the hair to fall 

 out. The third method of application is that of subcutaneous injection of tinc- 

 tui"e of iodin, J oz. of a 10 per cent solution for cows and mares, and \ oz. for 

 smaller animals being administered every two weeks. In all cases treatment 

 should liegin as soon as possible after an animal has been bred. 



Bovine malignant catarrhal fever, Bkuins {Ahs. in Yet. Rec, 32 {191'J), No. 

 1632, pp. 167, 168). — The author reports upon an outbreak in which seven ani- 

 mals died or were slaughtered, only one of which presented symptoms of ex- 

 cessive nervous excitement. 



Coccidiosis in cattle, W. D. Way and W. A. Hagan (Coi'ticll Vet., 10 

 {lf>20), Ko. 1, pp. 17-27, pis. 5). — A general account of this disease, together with 

 brief reports of nine cases observed. 



A disease in cattle due to crab grass (Digitaria sangninalis) , E. M. I'lCK- 

 ENS, M. F. Welch, and C. C. Siiivees {Cornell Vet., 10 (1920), No. 1, pp. 8-16).— 

 "An imusual disease affecting 78 head of cattle on five different farms has 

 occurred in southern Maryland. The symptoms of this disease appear to coin- 

 cide with those of buckwheat rash and clover disease. Limited feeding experi- 

 ments were carried out with negative results. No evidence of fungi or other 

 plant diseases were obtained. Crab grass (/). sanguinalis) , tlie predominating 

 forage in all the pastures, is thought to be the causative agent. The circum- 

 stantial evidence is sufficient to cause it to be looked upon with suspicion, at 

 least until it is proved innocent." 



Transformation of the alveolar epithelium in verminous imeumonia in 

 the sheep, J. M'Fadyean {Jour. Couipar. Path, and Then, 33 {1920), No. 1, pp. 

 1-10, figs. 9). — This is a report of histopathological studies conducted by the 

 author. 



Intestinal worms in hogs and stomach worms in sheep, B. H. Hansom 

 {Cornell Vet., 10 {1920), No. 2, pp. 66-7/,, pis. 3). 



[Report of the veterinary department] {Indiana Sta. Rpt. 1919, pp. 68-- 

 72). — This report deals largely with work on swine diseases. 



In continuation of work on bog cholera previously noted (E. S. R., 40, p. 

 783), the results are reported of a series of experiments conducted for the pur- 

 pose of determining the number of days that the hog cholera virus retains its 

 virulence outside of the infected animal. Sterile earth contaminated with 

 blood, urine, and feces from hogs having acute hog cholera was dried for vary- 

 ing periods of time and then mixed with feed and fed to susceptible hogs. 

 Urine IS, 6, 5, and 4 days old proved to be nonvirulent ; feces 18, 6, and 5 days 

 old nonvirulent and 4 days old slightly virulent ; blood 18 and 6 days old non- 



