788 EXPERIMENT STATION RECORD. 



author conducted feeding tests with this organism and ducks, chickens, and 

 pigeons. 



The results show that birds are relatively nonreceptive to anthrax infection, 

 as only 7 out of 29 birds succumbed to it. The body fluids of the chickens 

 seemed to have an extraordinary capacity for destroying the anthrax bacillus. 

 In the infected animals no absolute immunity seemed to remain behind. 



A bibliography of 43 titles is appended. 



The leg' mange of birds, T. Haiduck {Rev. in Deut. TierUrztl. Wchnschr., 18 

 {1910), No. 13, p. 197; Vet. Rec, 23 {1910), No. 1173, p. 408).— The author 

 considers the marked proliferation of horn in this disease to be indicative of an 

 active stimulation of epithelial growth that can not be explained by the me- 

 chanical irritation of the parasite alone. He attributes it to the influence upon 

 the epithelium of toxic substances excreted by the mites. Experimental trans- 

 mission of the parasite gave negative results. Having tested various agents 

 he recommends oleum carvi in the form of an ointment, 1 : 5. 



New investigations of Leucocytozoon sabrazesi and L. caulleryi of tlie 

 domestic fowl of Tonkin, C. Mathis and M. Leger {Bnl. Soc. Path. Exot., 3 

 {1910), No. 8, pp. 504-510, fig. i).— During the period from July, 1909, to 

 September, 1910, the authors examined 1.148 fowls, finding 28 infected by L. 

 caulleryi and 226 infected by L. sabrazesi. A double infection was observed in 

 3 cases. They also examined 196 ducks, 72 geese, 23 turkeys, 35 guinea fowls, 

 and 253 pigeons without finding either of the parasites. 



Experimental leukemia in chickens, II, V. Ellekmann and O. Bang 

 {Ztschr. Hyg. u. Infektionskrank., 63 {1909), No. 2, pp. 231-272, figs. 2; ahs. in 

 Berlin. Tierdrztl. Wchnschr., 26 {1910), No. 50, p. 1001). — Continuing earlier 

 work (E. S. R., 20, p. 286), the authors were able by the intravenous injection 

 of an emulsion of the organs of fowls afflicted with leucosis to produce the 

 typical condition in chickens. Doves, turkeys, rabbits, and guinea hens could 

 not be infected. The incubation time was found to be from one to two months. 

 The infective agent is considered an ultrafilterable virus. 



White diarrhea in chickens, its causes, and treatment, W. Westphal 

 (Deut. Landw. Gefliigel Ztg., 1910, No. 44 J «&«• i^ Berlin. Tierdrztl. Wclinsclir., 

 26 {1910), No. 50, p. 1001). —The author believes the cause of this disease to lie 

 chiefly in the strain of the bird, in unsystematic and bad feeding, and in im- 

 proper care of the chicks. Only birds which are at least 2 years old and fully 

 grown should be employed for breeding purposes. Another cause is supposed 

 to be the insufiicient absorption of the contents of the yolk sack, this being due 

 to some fault arising during artificial incubation. After leaving the shell the 

 condition may also be brought about by giving food a little too early. Accord- 

 ing to the author, food should only be given after from 48 to 72 hours, and 

 should consist of corn, wheat, oats, and from 3 to 10 per cent of meat or fish 

 meal. 



How to prevent and cure white diarrhea in chickens, F. L. Platt (Reh 

 Poultry Jour., 17 {1911), No. 11, pp. 1154, 1164-116S).— This is a popular de- 

 scription of this subject, and also of work previously noted (E. S. B., 20, 

 pp. 386, 496). 



Studies in regard to the penetration of formaldehyde, P. Lassabliebe 

 {Arch. Internet. Pharmaeod. et Ther., 20 {1910), No. 1-2, pp. 5-36). — This is a 

 physical and bacteriological study of the penetrating powers of formaldehyde, 

 with particular regard to its use as a disinfectant. 



The author points out that the penetration is dependent on 5 factors, namely, 

 the temperature of liberating the gas, the humidity of the atmosphere, the time 

 of exposing the gas to the objects, their temperature, and the size of the room. 

 The vaporizing apparatus was found most effective when operated at a tem- 



