VETERINARY MEDICINE. 1085 



Further experiments on the filterability of the virus of swine plague and 

 hog cholera, K. Ostf.ktag ami A. Siadik {/Jscln: hifikt'ionsknink. ii. IliJil. 

 Ilintxticrc. .t {I!)il7), ISo. 2--K pi'- ll-i-t'i^). — Six iiuniilation expernuents wore 

 carried out with HltcnHl virus oiitaincd t'roni li(),i;s affi'ctcd witli swiiic plasiuc 

 It was found that the disease could not he transnntted in this way. With 

 hojr cholera, however, results were different. In 5 out of 8 cases the disease 

 was transnntted ])y the use of filtered virus. The authors conclude, therefore, 

 that Schwcincp.'st nf Ccnnaiiy. li]<e hoj; cholera in this country, is caused by a 

 lilterahle virus and that />^/r/7//^s■ sniiicstifcr becomes sul)se(iuently established 

 in the lesions. 



The Swedish regulations regarding infectious swine diseases, A. I'eters- 

 SKN (Vcniffriill. A. a.siKllitxdiiit.. 31 il!)07). \(i. Id. pp. 23^-237).— Copies 

 are jiiven of the most recent proclamations of tlie Swedish government regard- 

 ing measures for the control of hog cholera, swine plague, and swino erysipelas. 



The etiology of rabies, I'. Kemi.ingku (Voinpt. I'cikI. .s'oc. Biol. [Puri.'i], 

 tii (I'Jiil), \(>. ('). pp. 2'i'.K 2-')(i). — On the basis of his experience the author 

 maintains that in more than .'jO per cent of cases rabies virus introduced into 

 animals or human I»eings will make its wa.y along the nerves or tln-ough tissues 

 and produce the usual symptoms of rabies. 



Diagnosis of rabies in laboratories, Lentz (Foiisc-ln: \ rl. II in/., J (1007), 

 Xo. !>. pp. 2<>!l-27')). — In the author's experience the identification of Negri's 

 corpuscles furnishes u reliahle and satisfactory means of diagnosing cases of 

 rabies. As a rule, rabbits inoculated witli virulent virus show symptoms of 

 the disease within from 13 to 21 days. This inoculation test may be resorted 

 to in cases where diagnosis by Negri's corpuscles is impossible. 



Negri's corpuscles in fixed virus, I>. \'. Fitksenko (.1/x'/(. ^'ct. Xaulc [St. 

 I'cti rsl,.\. AG ( I'.Pir,), \o. 10. pp. 7-i'>-7.]!)). — As a result of the microscopic study 

 nf Negri's corimscles, the author comes to the conclusion that comidete evi- 

 dence regarding the etiological significance of these bodies can not be developed 

 until imjiroved methods are devised for the study of their structure. 



Immunization against fowl cholera, hemorrhagic septicemia, and swine 

 plague with bacterial extracts, J. Citkox and K. I'ltz [Zt.'fchr. Hi/!/, ii. liifclc- 

 tidiisUnnik.. .')(! {1<)07). Ao. i, ii/i. I'l-l-H'/. pi. 1). — The bacterial extracts with 

 which the experiments rei)orted in this pajier were cai'ried on are identical 

 with the artificial aggressins of Wassermann. In the preliminary exiieriments 

 it was found that rabbits could be thoroughly innnunized against fowl cholera 

 by the use of i)acterial extracts ol)tained from seruiu. These results are 

 attributed to artificial rather than to natural aggressins. Imiuuinzation is 

 more easily accomplished in ral)bits than in ])igeons. By means of artificial 

 aggressins similar satisfactory restills were obtained in the case of hemorrhagic 

 seiiticemia and swine iilagnc It is held, howi^ver, that while the organisms of 

 these three" kinds of seiiticemia behave in a very similar manner this fact can 

 not be used as proof of their identity. 



The virus of fowl plague, X. K. IJiss (Arch. Hi/;/.. ■'>!) (HMX;). ,Yo. }. /)/*. 

 286-312). — The blood from cases of this disease is exceedingly virulent, jpcing 

 fatal when iised in such extreme dilution as 1 : l,()()(),O()0,000. 'I'he micro- 

 orgaiusm of the disease appears to be in some way attached to the blood cor- 

 puscles or ill some cases to wander into these structures. In a centrifugal 

 machine, the virus of fowl plague may he partly separated from the blood cor- 

 imscles and .«!erum, although no complete sterilization of aiiy part of the 

 material can be accomplished in this way. Notes are given on the effect of 

 various chemicals upon the vii'us of the disease. 



An attempt was made to iiroduce active immunity by the use of the virus 



