378 EXPERIMENT STATION EECORD. 



10 days old, while other samples from the same lot but 00 days old produced 

 tuberculosis. The most highly infectious lot was butter made from milk 

 secreted by a tuberculous udder. The inoculation of guinea pigs with i)roducts 

 suspected of being tuberculous was found to be a more delicate test than the 

 feeding experiments. 



The inference drawn from this work is that the most satisfactory way of 

 producing sanitary or certified milk would be to manufacture butter only 

 from cream that is free from tubercle bacilli. Though the application of the 

 tuberculin test is desirable, pasteurization should be resorted to where it is 

 not practicable. No dependence can be placed on the germicidal action of salt. 



The viability of tubercle bacilli in cheese, J. R. Mohler, H. J. Washburn, 

 and C. F. Doane (U. S. Dcpt. Agr., Bur. Anhn. Indus. Rpt. 1909, pp. i87~ 

 191). — Cheese made from milk which had been inoculated with tubercle bacilli 

 was ripened at a temperature of about 05° F. for 7 days, then put into tin cans 

 and placed in cold storage at about 33° F. At periods ranging from 23 to 383 

 days from the day the cheese was made it was used for feeding and for inocu- 

 lating guinea pigs. 



None of the animals used in testing the cheese when it was 23 days old de- 

 veloped tuberculosis, either in those inoculated or in those fed, but generalized 

 tuberculosis was more or less prevalent in the lots fed or inoculated when the 

 cheese was from 33 to 261 days old. The results were again negative in all 

 cases after the cheese was 297 days old. As in the case of the investigations in 

 butter (noted above), the bacilli were found to be irregularly distributed. 



As a result of these experiments it is evident that tubercle bacilli remain 

 virulent in cheese for a considerable period of time, and that c"heese made from 

 raw unpasteurized milk should be considered a possible carrier of tubercle 

 bacilli. It is recommended that some steps be taken to prevent the introduction 

 of living virulent tubercle bacilli into this important food, either by subjecting 

 all cows to the tuberculin test or by pasteurizing the milk. 



VETERINARY MEDICINE. 



Results of investigations in the field of general pathology and patho- 

 logical anatomy of man and animals, edited by O. Lubaesch and K. Oster- 

 TAG (Ergeh. AUg. Path. Meim-h. ji. Ticrc, 12 (1908), pp. X+80] ; 13 (1909), 

 pts. 1, pp. IX+629; 2, pp. VIII+G94; U (1910), pts. 1, i)p. X+771; 2, pp. IX+ 

 932). — These are annual reviews of the literature on pathology in continuation 

 of the series previously noted (E. S. R., 19, p. 1180). As in previous issues, 

 extensive classified bibliographies and author and subject indexes are included. 



Results of investigations in the field of general pathology and patho- 

 logical anatomy of man and animals, edited by O. Lubarsch and R. Oster- 

 TAG (Ergch. AUg. Paih. Mcnseh. lu Tiere, 12 (1908), pp. X+801; 13 (1909), 

 819). — In this supplemental volume a comprehensive review is given of litera- 

 ture published during the years 1906 to 1909 on the general pathology and 

 pathological anatomy of the eye. 



Extensive classified bibliographies are included. 



Research work. — Diseases of animals, F. Tins well (Rpt. Govt. Bur, 

 MicroUol. N. 8. Wales, 1909, pp. 11-53, Hgms. 2). — A discussion of the princi- 

 ples involved in the investigation of infectious diseases is first entered into. 

 Bacterial infections are then taken up and information presented upon tubercu- 

 losis, plague, including a tabular report on ecto-parasites collected from rodents 

 in 1909, pseudo-tuberculosis (lymphadenitis) in sheep, bovine mammitis, etc. 

 The protozoan diseases considered include endemic hematuria in cattle, jaundice 

 in lambs, balanitis in sheep, etc. A list is also given of the insects, ticks, etc., 



