VETERINARY MEDICINE. 581 



A note on surra in camels, H. E. Cross {Lahore, India: Govt., 1914, pp. 8). — 

 A brief jurount with tliroctions for the diagnosis of the disease through a study 

 of the Mood. s.vin])t()nis. and post-mortem appearances; the treatment, etc. 



Wholesale handling of bovine tuberculosis in Colorado, W. W. Yard (Amer. 

 Yet. Rev., Jf6 (1914), ^o. 1, pp. 56-59). — A statement al)out the occurrence of 

 tuberculosis amongst bovines and pigs on a farm owned by one of the richest 

 men in Colorado, and illustrating some of the difficulties which may be en- 

 countered by an official veterinarian in eradicating tuberculosis from a herd in 

 which the support of the owner is not given. Stock worth $75,000 was destroyed. 



The diseases of the internal generative organs in relation to dairy inspec- 

 tion, W. L. Williams (Rpt. X. Y. State Yet. Col., 1912-13, pp. 193-200) .—Thin 

 is a general discussion of the diseases of the internal generative organs that are 

 of importance in dairy inspection. 



A study of infectious abortion in cattle, V. A. Moore and C. P. Fitch 

 (Rpt. X. Y. State Yet. Col., 1912-13. pp. 82-114).— This article discusses the 

 cause, channels of infection, experimental infection, elimination of the causative 

 organism, diagnosis, treatment, immunity, and control. A more recent report on 

 this disease by Williams has been noted (E. S. R., 31, p. 779). 



A bil)liography of 67 titles is appended. 



Experiments on the control of warble flies in Germany, Schottler and 

 Glaseb (ilitt. Ausschusses Belcdmpf. Dasselplage, No. 6 (1914), pp. 1-31; ahs. 

 in Internat. Inst. Agr. [Rojne], Ho. Bui. Agi: Intel, and Plant Diseases, 5 

 (1914), No. 9, pp. 1189, 1190).— This report of the work of the Warble Control 

 Committee carried on during 1913 in the district of Xeuhaus on the Oste is in 

 continuation of that previously noted (E. S. R., 32, p. GO). Of the 3,892 head 

 of cattle treated, 75.4 per cent were freed from warbles, an average of 16.2 

 larvie per head being removed. 



In a second part of the paper a campaign against warbles in a district in the 

 grand duchy of Oldenburg is reported upon. An exi>erinient in which ten steers 

 were kept under exactly the same conditions, five being freed from warbles and 

 the others not, indicated that the loss in flesh caused by warbles amounts to 

 more than the loss caused through damage to the hides. 



The effect of the cattle tick upon the milk production of dairy cows. T. E. 

 Woodward, W. F. Turner, and C. Curtice (U. 8. Dept. Agr. Bui. 147 (1915), 

 pp. 22, figs. 6). — This bulletin reiwrts upon an experiment undertaken with a 

 view to definitely determining the direct effect of the cattle tick (Margaropus 

 atinulatus) on the milk production and body wei'^ht of dairy cows. 



In conducting the experiment, twenty grade Jersey cows of average dairy 

 quality and in fair condition of flesh, all being immune to ordinary attacks 

 of tick fever, were selected in the early part of their lactation periods. They 

 were divided into two groups of ten animals each, one being freed from ticks 

 and kept free, the other being kept tick-infested by applying seed ticks at 

 regular intervals. The experiment began May 21. 1913. and lasted during a 

 period of 140 days. The milk of each cow was weighed and a sample taken 

 at every milking for a composite fat test at the end of each ten-day period. 

 The body weights were taken for ten consecutive days at the beginning of the 

 work; thence once every ten days until the last period, when they were taken 

 for ten consecutive days as at the beginning of the work. 



The investigations show that the cattle tick has a decidedly injurious 

 effect upon supposedly immune dairy cattle, the extent of the injury being 

 largely dependent upon the degree of infestation. The effect is more pro- 

 nounced upon the milk production than upon the body weights when a suffi- 

 cient supply of food Is given. 



