534 



table oils, it contains very nearly the same proportion of soluble fatty 

 acids as cows' butter, and tliis characteristic which distinguishes cows' 

 butter from the other animal fats can not, therefore, be relied upon here. 

 According to the author acetic acid furnishes a means for recognizing 

 the presence of cocoanut butter. He finds that the oils and fats, under 

 conditions not stated, differ in the amount of acetic acid which they are 

 capable of dissolving, as is shown by the following: 



Examivations of pure lutter, cocoanut hutter, mixtures of the two, and oleomargarine. 



* Strength of soda solution not given. 



The oleofractometer, the acetic acid test, and the determination of 

 the volatile acids seem, then, to be first in importance in the detection 

 of adulteration with cocoanut butter. 



Koch's lymph as a means of diagnosing cases of tuberculosis in cattle 

 {Deutsche Molkerei-Zeitung, 1891, jp^. 81-83, and 2;. 13G).— Several trials 

 have been recently made to test the application of the lymph discovered 

 by Dr. Eobert Koch of Berlin, in the diagnosing of cases of tubercu- 

 losis in cattle. 



Under the direction of W. Gutmann (Veterinary Institute, Dorpat, 

 Russia; Bait. Woch.f. Landw. Gcweherji. u. Handel), three cows known 

 to be tuberculous were inoculated behind the shoulder blade, A with 

 0.1, B with 0.2, and C with 0.3 c. c. of lymph. The general reaction fol- 

 lowing the inoculation of persons infected with tuberculosis consists, 

 according to Dr. Koch, of an attack of fever, beginning usually 4 or 5 

 hours after inoculation, during which the temperature of the body rises 

 to 390, 400, and in some cases to 41° 0. (102.2°, 104°, or 105.8° Fah.). 



The temperature of the animals was taken on the day before inocu- 

 lation once in 2 hours, and on the day of inoculation and the following 

 day every hour. There was an increase in the temperature of each cow, 

 commencing approximately 11 hours after the inoculation, and lasting 

 with A (0.1 c. c. of lymph) 4 hours, with B (0.2 c. c.) 9 hours, and with 

 (0.3 c. c.) 10 hours. A's temi)erature rose to 40°, B's to 40.8°, and C's 

 to 41.7° C. Three and a lialf days after the first inoculation the inocu- 

 lation of A was repeated, with 0.3 c. c. of lymph. Tbe reaction came 



