1094 EXPERIMENT STATION RECORD. 



was unable to produce either hog cholera or Kwine plague by subcutaneous injections 

 of virulent pure cultures. It was also found that hogs which had recovered from hog 

 cholera possessed no immunity from swine plague; or where such immunity was 

 observed, it was of only short duration. 



Dourine of horses, J. Marek {Ztschr. Thiermed., 4 [1900), No. 6, pp. 401-443, 

 figsi. 8). — The author made extended studies of the pathological lesions produced by 

 this disease. Especial attention was given to the brain, spinal cord, and sijinal 

 nerves. These studies failed to show any traci of an inflanmiatory process in any 

 part of the central nervcjus system. In the posterior columns of the spinal cord a 

 secondarv di'generation of nei'vous tissue was noted. In long-standing cases certain 

 pathological changes were noticed in the jjcripheral nerves and in the spinal cord, 

 but it is believed that these changes could not be the cause of the symptoms usually 

 o))served in cases of dourine. 



Malignant oedema in horses, Frohner {Monatsh. Prakl. Thierh., 12 {1901), 

 No. 2-0, pp. lOO-lOo). — Tlie author gives a detailed account of the symptoms and 

 post-mortem findings in this disease in horses. 



Dog distomper, E. Zschokke (Schiueiz. Arch. Tierh.,42 {1900), No.6,pp.S41-348, 

 Hg.l). — The author describes in detail the symptoms of this disease. It is stated 

 that the form which was studied by the author was not what is ordinarily known as 

 dog distemper, but it is correctly called gastritis hsemorrhagica. Numerous remedies 

 were tried in the treatment of the disease without striking results. It was found 

 that the most that could be hoped for was an alleviation of the more pronounced 

 symiitonis ))y can'ful dieting and nursing. 



A method of demonstrating the capsule in all species of bacteria, I. Boni 

 (Cmtbl. Bali. u. For., I. Abt.,2S {1900), iVo.^0, pp. 705-707).— This method consists in 

 staining the bacteria in carbolfuchsin or other anilin stains, then drying and wash- 

 ing with water and a secondary staining with methylene blue. By this method the 

 author was able to demonstrate the capsule in a considerable variety of bacteria, 

 including the micro-organisms of anthrax and glanders. 



The disappearance of the so-called bactericidal action of blood serum on 

 account of the addition of nutritive substances, Finku {Centhl. Bait. u. Par., 

 I. Aht., :.'S [moo), No. 20, pp. 094, 695). — The author experimented with the micro- 

 organisms of anthrax, typhus, and cholera. Freshly drawn rabbit serum was used 

 for this purpose, and it was found that by the addition of peptone sugar the serum 

 was rendered entirely inactive toward the anthrax bacilhis. 



The antibacterial action of the serums of animals treated •vrith. arsenic and 

 creosote, E. Wiener {('miipt. Rend.Soc Biol. ]\trl.^,5J {1900), No..j9,pj). 1073-1075). — 

 The author conducted experiments on rabbits and dogs. These animals received 

 injections of arsenic and creosote and their serums were later examined with refer- 

 ence to their action toward the micro-organisms of typhus and cholera. It was 

 found that a preliminary treatment with arsenic or creosote considerably in(;reased 

 tlie action of protective substances which normally exist in the organism. 



The theory of disinfection, H.Marx {Centhl. Bukt. u. Par.. 1. At,t., 2S {1900), 

 No. iiO, pp. (',91-(>93). — The author had previously demonstrated tiiat tlic virulence of 

 pathogenic bacteria disaj^peared with the disappearance of the Ba))es-Ernst bodies. 

 I-'xperiments were conducted for the purpose of determining whether these bodies 

 were immediately affected by various disinfectants. It was found that corrosive 

 sublimate and carbolic; acid produced thecomjilete disappearance of the Babes-Ernst 

 bodies and that these structures were also destroyed by subjection to the tempera- 

 ture of boiling water. Experiments in disinfei'ting the hands indicate that the 

 bacteria were not always completely destroyed but that the Babes-Ernst bodies were 

 ])artially or completely annihilated. 



The conditions of disinfecting by means of formalin fumes, C. Spengler 

 {Centhl. Bukt. a. Par., 1. Aht., 23 {1900), No. 20, pp. 704, 705).— In experiments 



