1919] VETERINAEY MEDICINE. 279 



at two-hour intervals for 72 hours after phitiuj?- Tables are also given show- 

 ing the effects of clarification upon pure cultures of several species of bacteria. 



Study of Babcock test for butter fat in milk (lotva Sta. Rpt. 1918, p. 30). — 

 " The Babcock test for milk, when read from the top on the upper meniscus 

 to the bottom of the lower meniscus, gave results which are higher tlian those 

 obtained l>.v the gravimetric (Roese-iJottlieb) method. Ou tlie average of 

 190 comparisons, as carried out in the work reported, tlie difference amounted 

 to 0.06 per cent. . . . The Babcock test would read about 0.11 per cent low, 

 depending somewhat on the per cent of fat in the sample, If the meniscuses 

 were not included in the reading." 



" The amount of fat left in the liquid below the fat column is quite variable 

 and on the average equaled 0.13 per cent expressed as reading on the neck 

 of the test bottles. There were impurities in the fat column that on the average 

 amount to 0.78 per cent of the reading." 



A bacteriolog'ical study of the method of pasteurizing and homogenizing 

 the ice cream mix, B. W. Hammer and L. R. Sanders {Iowa Sta. Bui. 186 

 {HI 19), pp. 17-26). — As part of a series of bacteriological studies of ice cream 

 (E. 8. R., .38, p. 808), the authors have made bacterial counts of nine pasteur- 

 ized and homogenized mixes and of the ice cream made therefrom. 



The heating of the mix to about 145° F. but without holding resulted in a 

 decrease in bacteria of from 91.5 to 99.5 per cent, the average being 96.4. Part 

 of each pasteurized mix was run through the homogenizer without pressure to 

 see whether the machine might be an important source of contamination. In 

 all cases the count was higher after such a run and was generally more than 

 doubled. " The liomogenizer was given what was considered to be satisfactory 

 care, since it was thoroughly washed after use, and then in most runs flushed 

 with boiling water just before use." In 6 cases the rest of the mix, which was 

 run through under the usual pressure, had a lower content than tlie nonpressure 

 portion, sometimes approximating that of the mix inunediately after pa.steur- 

 izatiou. The operation of the machine under pressure is thought to have a 

 tendency to break up clumps of bacteria. In 4 runs the homogenized mix was 

 passed over a cooler and the bacterial count was thereby increased slightly. 



VETERINARY MEDICINE. 



Regional anatomy of domestic animals, L. JNIontane and E. Bottrdelle 

 {Anatomic Rcf/iouale dcs Aniniaitx I)o)iie.^tUjiics. Paris: J. B. Baillivre & 

 Sonn. 1913. vol. 1, pts. 1, pp. riI+512; [2], pp. 513-1069, flf/s. 56J, ; 1917. vol. 2, 

 PP- [yn+384, figs. 259).— Volume 1 of this work deals with the horse and 

 volume 2 with ruminants. 



Farm hygiene, P. Regnard and P. Portier {Hygiene de la Fcrme. Pa7is: 

 J. B. Baillicre d- Son, 1917, 2. ed., pp. ^.'fl, figs. 167). — This volume, which is one 

 of the Encyclopedie Agricole published under the direction of G. Wery, deals 

 particularly with infectious diseases and parasites attacking farm animals, 

 their control, aiid remedial measures. 



The municipal abattoir at Alexandria, Egypt, F. PioT Bey {Not ice sur 

 V Abattoir Municipal d^ Alexandrie {Egyptc). Alexandria: Whitehead, Morris 

 d Co. {Egypt), Ltd., 1917, pp. //7, p7.s\ 22. fig. /).— A detailed account of this 

 municipal slaughterhouse. 



Seventh annual report of the commissioner of animal industry for the 

 year ending November 30, 1918, L. H. Howard {Ann. Rpt. Comr. Anini. In- 

 dus. [Mas.s.], 7 {1918). pp. 46, figs. 3). — Included in this I'eport on the occur- 

 ence of and work with infectious diseases are charts showing the reported num- 



