1919] VETKRTNARY TSmmOlNE. 875 



to one-tiftli tlip origiTial volume luivc ln'cn obliiiiu-d whicli filtered easily, con- 

 tained I'elatively little protein, and represented u loss of material not exceed- 

 ing 10 per cent. 



Tlie production of antiserum for agglutination tests, F. H. K. Reynolds - 

 and J. F. Hiix {Jour. Infect. Diseases, 25 (1919), No. 5, pp. Jpl2, ^iS).— Tlie 

 authors have found that v/ashing in sterile salt solution the killed suspensions 

 of bacteria which are used for the production of immune serum rids the sus- 

 pensions of certain toxic materials and facilitates the production of antiserum. 



Phenolut, a colloidal cresol solution as a disinfectant, W. Schurmann 

 {Ztschr. Hyg. u. Infcktionskranh:, SJf (1917), No. 1, pp. i^-S^).— The author 

 describes a new colloidal cresol preparation '• phenolut " whicli is said to contain 

 no soap or resin, to have a cresol content of 40 per cent, and to form a clear 

 4 per cent solution in water. Tests of the conipai'ative v^ilue of phenolut and 

 lysol as disinfectants are reported, which indicate that the phenolut is as pow- 

 erful a disinfectant as lysol. 



Anaplasma marginale. — Jolly bodies in anemic blood; anaplasmatic forms 

 of piroplasms, G. Di DoMizio {Clin. Vet. IMilan], Rass. Polisia Sanit. e Ig., 

 Ji2 {1919), Nos. 7, pp. 203-220, figs. 2; 8, pp. 237-251; 9-10, pp. 292-311, pis. 2; 

 ahs. in Trop. Vet. Bill, 7 {1919), No. 3, pp. 152-155, pi. i).— The author's con- 

 clusions ai'e as follows : 



" There exists among goats in the colony of Eritrea an intracorpuscular 

 blood parasite which in all probability represents a species belonging to the 

 genus Anaplasma {A. avis). The researches and observations upon which va- 

 rious autiiors have based doubts upon the parasitic nature of anaplasms have 

 maintained that they were nuclear fragments (Jolly bodies) or, on the other 

 hand, stages in the life cycle of some piroplasms, do not detract from the 

 value of Theiler's and Lignieres's experiments, which demonstrated the exist- 

 ence of a new genus of parasite named by Theiler Anaplasma. 



"The morphology described as characteristic of A. marginale (and its va- 

 riety centrale) and of A. argentinum, as described by Theiler and Lignieres, is 

 distinguishable from that of the Jolly bodies found in anemic blood. The con- 

 siderably higher percentage of the red corpuscles invaded with marginal 

 points is of especial importance in this connection. These anaplasms are also 

 distinguishable from the so-called anaplasm-like forms of piroplasms, inasmuch 

 as a greater percentage of corpuscles is invaderl with marginal points, and these 

 points are quite spherical in form and each has shai-ply defined borders. 



" Some authors in descriptions of alleged marginal points, examined singly, 

 have pictured them as having irregular and indistinct borders (like those of 

 the anaplasm-like forms of piroplasms), but the general aspect of true ana- 

 plasms leaves no room for doubt. 



" Although Anaplasma has only been observed as a well-defined entity among 

 bovines in South Africa and Argentina, the collective observations and re- 

 searches of many authors appear to show that (a) these bodies exist not only 

 in bovines but also in other animals, (b) very probably there exist several 

 species or varieties of anaplasms not only in various species of animals but 

 also in the same species of animal, (c) these various species or varieties, 

 although conforming morphologically with typical Anaplasma, present slight 

 differences in form." 



A list of 58 references is appended. 



The antigen of Bacillus anthracis, C. C. Warden and J. T. Connell {Jour. 

 Infect. Diseases, 25 {1919), No. 5, pp. 399-411). — Following the methods pre- 

 viously employed in the study of fats as antigens (E. S. R., 40, p. 676), a tenta- 

 tive analysis of the fatty complex of the anthrax bacillus was made which in- 



