6V6 EXPERIMENT STATION RECORD. 



Whey obtained iu making Camembert clieese from raw milli contained 0.015 

 per cent fat; from pasteurized millv, 0.01 per cent. Wliey obtained in malcing 

 double cream cheese from raw milk contained 0.272 per cent fat, from pasteur- 

 ized milk 0.228 per cent. In making buttermilk clieese the results depended 

 to a great extent on the kind of buttermilk used. Cream that was pasteurized 

 sweet gave good results, while cream that was ripe or partially ripened before 

 pasteurizing gave as a rule poor returns. It was often very fine in grain and 

 pasty, and in some cases there was no coagulation. 



Methods of making Stilton and Wensleydale cheese are described, and notes 

 given on other cheeses. 



VETERINARY MEDICINE. 



Text-book of milk hygiene, W. Ernst, trans, by J. R. Mohleb and A. Eich- 

 HOEN (Chicago, 1914, PP- X-\-281, pis. 5, figs. 29). — This is the first American 

 edition of this work, and is an authorized tx'anslation of the German edition 

 noted (E. S. R., 29, p. 877). The book treats of the subject from the stand- 

 point of veterinarians, who according to the preface are " the proper experts 

 who must stand by the side of the producers and give them the necessary 

 advice and instruction." 



In the preparation of the English edition the conditions prevailing in this 

 country have been especially considered, and accordingly much material has 

 been included from the repoi'ts of the various milk commissions and other 

 sources. The chapter dealing with the German laws and regulations relating 

 to the handling, production, and standards of milk has been replaced by a 

 chapter which deals solely with the conditions and standards existing in the 

 United States. Various tests, microscopical and otherwise, for judging milk, 

 which may be easily conducted by the veterinarian, are presented. The methods 

 for eradicating tuberculosis from dairy herds are plainly although briefly 

 stated, and the relation of bovine tuberculosis to tuberculosis in man, especially 

 alimentary tuberculosis, is discussed. The subject of mastitis is given special 

 treatment. 



Linimentum camphorae (camphor liniment), C. P. Gutheie (North Dakota 

 Sta. Spec. Bui., S (1914), Xo. 6, pp. S3-85). — No difference in the camphor con- 

 tent was noted whether the camphor was dissolved in cold cotton-seed oil or 

 with the aid of gentle heat under the water bath. It is possible, however, to 

 dissipate some of the camphor if a gentle heat is not employed. 



A Halphen test was made on all samples obtained in the open market (37 in 

 all) and five did not give the reaction, one of which was soap liniment, and 

 the remainder gave refractive indexes lower than that of a sample of pure 

 cotton-seed oil. Control samples of camphorated oil, made strictly according to 

 the U. S. Pharmacoixeia, gave readings of 1.4708 at 25° C, which compares well 

 with that of pure cotton-seed oil, i. e., 1.4710. Pure olive oil gave a refrac- 

 tometric reading of 1.4672 at 25°. From this it would seem that the four 

 samples mentione<l above contained olive oil. 



The percentage of camphor present in the samples collected on the market 

 varied from 2.56 to 25.9, with an average of 16.99 per cent. The U. S. Phar- 

 macopoeia camphor liniment is essentially a 20 per cent solution of camphor in 

 cotton-seed oil. 



The method used for determining camphor in camphor liniment is as follows : 

 '* Weigh out accurately about 5 gm. of the sample in an aluminum evaporating 

 dish and heat in the water oven until all camphor is driven off. This may be 

 determined by the odor and by frequent weighings. Between 10 and 11 hours 



