VETEBINAEY MEDICINE. 781 



Ascaris suum in sheep, D. C. Mote (Science, n. ser., 40 (1914), ^0. lOZS, 

 p. 216). — During the course of a post-mortem examination of an S-month-old 

 lamb two female ascarlds were found wliich were identified as A. oris. This 

 lamb had been fed and kept in a pen previously occupied by hogs known to be 

 infested by ascarids, and the author thinks it probable that the ascarids may 

 represent A. smim, since it is still questionable whether A. ovis is a distinct 

 species. 



A summary of studies of loco weed disease of sheep, H. T. Marshall (Bui. 

 Johm Hopkins Eosp., 25 (1914), No. 282, pp. 234-236) .—This is a brief review 

 of a detailed report to be published later of the results of investigations con- 

 ducted in Montana for this Department during the summers of 1903 and 1904. 

 Some 80 sheep were used in feeding experiments with Aragallus spicatus. 



The experiments have led the author to conclude that none of the abnormali- 

 ties encountered in the sheep could be attributed to the poisonous action of the 

 loco weed. He states that none of the sheep gave the slightest evidence of hav- 

 ing suffered any ill effects from eating the weed. On the other hand, the ex- 

 periments seemed to confirm the view that the animals were suffering chiefly 

 from starvation combined with one type or more of parasitic infection. 



" My investigations have convinced me that there are several diseases of 

 western live stock masquerading under the general name ' loco disease.' One 

 hundred per cent of the severely ' locoed ' sheep which I studied were not suf- 

 fering from locoism, but from underfeeding combined with parasitic infection. 

 I therefore think there is reason to be doubtful as to the existence of pure, 

 bona fide loco weed poisoning, and I hold that it is perfectly certain that the 

 heavy losses attributed to loco weed disease are at least in large measure due 

 to other causes, which can usually be ascertained by careful study." 



The prevention of hog cholera in Indiana, C. G. Stabb (Indiana Sta. C'irc. 

 44 (1914), pp. 7, figs. 2). — The data here presented relate largely to antihog 

 cholera serum and its use. 



Canine babesiasis in Porto Rico, I. Gonzalez Mabtinez (Jour. Trop. Med. 

 and Hyg. [London], 17 (1914), No. 13, p. 194)- — During the course of routine 

 examination of dogs for epizootic diseases and for hydrophobia the author de- 

 tected two cases of canine piroplasmosis in Porto Rico. 



Hygiene and diseases of poultry, LifiNAtrx (Min. Agr. et Trwv. Pub. [Bel- 

 gium], Off. Rural Raps, et Communs., No. 9 (1914), PP- 245-266).— A general 

 account. 



Studies on fowl cholera. — IV, The reciprocal relations of virulent and 

 a virulent cultures in active immunization, P. B. Hadley (Rhode Island Sta. 

 Bui. 159 (1914), PP- 383-403). — "The present paper presents the results of a 

 study conducted to ascertain (1) the protective power of certain avirulent cul- 

 tures of the fowl cholera organism against a highly virulent culture (culture 

 48) ; (2) the extent and degree of protective power exercised by a certain 

 immunizing culture (culture 52) against twelve, heretofore untested, virulent 

 strains; (3) the protective power of combinations of cultures. The results, 

 briefly stated, are as follows: 



"Among 17 strains of the actual fowl cholera bacterium which have now 

 been tested for their resistance-producing power toward a highly virulent cul- 

 ture, only one (culture 52) was found which produced any resistance what- 

 ever; and this culture, upon subcutaneous inoculation, invariably gave perfect 

 immunity against the most virulent culture in the laboratory collection (cul- 

 ture 48). This immunizing culture has now been tested (alone) against five 

 other virulent strains, toward three of which it is also protective. In the other 

 two cases, it is irregularly protective. In the two instances in which culture 

 52 alone failed to protect, or protected irregularly, complete protection was 



