1920] VETERIX.'UIY MEDICINE. 879 



ausl. Forsoksv. JurdbruksomrMet, No. 154 (1011), pp. 12; also in K. Landthr. 

 Akad. Handl. och Tidskr., 57 (1918), No. 1, pp. 19-28).— The author describes 

 in detail the method of Ayers and Johnson (E. S. R., 31, p. 771) for the removal 

 of garlic tiavor, and reports a successful modification in which the cream Is 

 warmed in a pasteurizing apparatus and cooled in thin tilms exposed to the air, 

 but without the use of an air blast. 



It i3 also noted that heating garlicky butter to 100 C.° may render it suit 

 able for cooking pm-poses. 



A cooperative laboratory [for dairy bacteriology] (Better Bu.nness, 5 

 (1920), No. If, pp. SlJi-Sn. fig. i).— An account is given of a bacteriological 

 laboratory established in Dublin for the use of cooperative creameries affiliated 

 with the Irish Agricultural Organization Society. Butter control is the main 

 activity, but recently a cheese control has been inaugurated and it is expected 

 soon to include the control of market milk. 



VETERINARY MEDICINE. 



A text-book of the principles and practice of veterinary medicine, D. S. 



White (Philadelphia: Lea d- Febiger, 1920, 2. ed., rev., pp. XVI-\-5Sl).— This 

 is a revised and enlarged edition of the work previously noted (E. S. R., 37. 

 p. 176). 



A modification of Van Leersiim's bloodless method for recording blood 

 pressures in animals, A. E. Cohn and U. L. Levy (Jour. Ex-pt. Med., 32 (1920), 

 No. 3, pp. S51-.i5.5, pis. J,, figs. 3).— The fact that there was no satisfactory 

 method for taking the blood pressure of laboratory animals so that observations 

 can be repeated on successive days over long periods of time led the authors to 

 make use of the method here described and illustrated, the essential part of 

 which was first described by Van Leersum in 1911 and utilized by him for 

 studies on rabbits. It consists in making the carotid artery accessible to direct 

 examination. 



A contribution to the knowledge of acetonuria in domestic mammals, 

 G. Sinn (Arch. Wiss. u. Prakt. Tierheilk., /,2 (1916), No. 4-5, pp. 322-367).— In 

 investigations conducted by the author acetone was regularly found in the 

 urine of normal horses and cattle. It varied in amount from 0.38 to 3.S6 mg. 

 per liter of urine in horses and from 0.2 to 2.4 mg. per liter in urine of cattle. 

 There was no increase in the amount of acetone in the urine of tubercular cattle, 

 but there was an increased acetone content in the urine of horses suffering from 

 a fever. A list of 27 references to the literature is included. 



Principles in serologic grouping of B. abortus and B. melitensis. — Cor- 

 relation between absorption and agglutination tests, M. L. Feusiek and 

 K. F. Meyer (Jonr. Infect. Disea.ses, 21 (1920), No. 3, pp. 185-206, figs, li).— 

 " Unless an antiserum is absorbed to extinction of the absorbing strain, the 

 residual agglutinins can not be classed as specific. 



"A series of absorption tests with formalinlzed suspensions in B. abortus and 

 B. melitensis antiserums led to a fourfold grouping of 14 B. abortus and B. 

 melitensis strains. Groups one and four were represented by two :ind group 

 three by one strain, the majority falling in group two. All B. abortus strains 

 belonged serologically to group one. Groups one and two are closely related. 

 They are sharply defined from groups three and lour. The grouping revealed 

 these principles : 



"(1) An antiserum can not be exhausted by strains of another group. It is 

 always exhausted by its homologous strain, and may be exhausted by other 

 members of the same group. 



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