1086 EXPERIMENT STATION RECORD. 



colli imietl on a somewhat different line from previous ones, as a result of the 

 cbservation, made in coinioction with Texas fever, that the inoculation of cattle 

 with blood of a calf immune from the disease is not so frequently followed liy 

 strong reactions and- mortality as when the blood is derived from a full-grown 

 animal. 



"The inoculation of animals with horse foal lilood of the first, second, and 

 third generations caused a mortality of <> out of 1S(;, or 3 per cent. 



"The Inoculation of animals with horse foal blood of the fourth, fifth, sixth, 

 seventh, and eighth generations cMused a mortality of 1 in 22, or 4.~> per cent. 



"The inoculation of animals with donkey foal blood of second to sixth gt^n- 

 erations caused no mortality amongst ITo animals. 



"The reactions caused by injection of horse foal blood were more severe 

 than those given by injection of donkey foal blood. 



"No cases of relapses after discharge have occurred, proving that the im- 

 munity given by the injection of donkey foal blood is as good as that afforded 

 by horse foal blood. 



"For further immunization purposes, therefore, I recommend the passing of 

 blood originating from a natural infection of a donkey with Piroiilnsina cqul 

 through donkey foals, and to use 1 cc. blood from tlie fourth generation and 

 upwards, bearing in mind the pi'ecautionary measures mentioned above. 



" Finally, all foals kept for tapping purposes, and used in connection with the 

 inoculation, must be kept free from ticks. This precaution lias been carried out 

 at this laboratory wtth all foals used in the experiments, as it stands to reason 

 that a reinfection by means of ticks would increase the virulency of the blood 

 which is to be used as vaccine." 



Typhoid fever of the horse — a piroplasmosis, A. Pricoi.o {Vet. Jour.. (>'/ 

 (190S), Xo. J,00. pp. .'I'.lO-JfD.'i, fig. ^).— The author presents an account of the 

 disease produced by Piroplnsma rqui. According to the autlior's exiterience 

 and to the statistics of the Italian war department, this disease is spread over 

 all Italy, including Sicily and Sardinia, but seems to be localized in centers 

 from which it has little tendency to spread. The disease may be conveyed by 

 injections of blood of diseased horses into healthy suscei)tible ones. 



"The morphological characters of the parasite, its manner of reproduction, 

 transmission of the disease by injection of the blood, clinical features, and jiost- 

 niorteni appearances slmw that Italian equine })iroi)l;isni()sis is identical with 

 eipiine ])iroplasniosis described by Theiler in South Africa, and generally with 

 all eciuine piroplasmosis found iu Africa and Asia." 



A resume of our knowledg'e of canine piroplasm^osis with an outbreak 

 amongst the hounds of the Madras hunt, II. T. Pkase and W. D. (JuNN {Jour. 

 Trop. Vet. ticL, S { I'.iOS), \o. 2, /*/). n'o-tUO, pi. /, charts .'/). — Following a review 

 of the present knowledge of malignant jaundice of dogs the auth.or reports an 

 outbreak of the disease in .Madras hounds. Temperature charts are presented. 



Acariasis as found in the transport animals employed on field service, 

 Bakky {Vet. Jour., 6', (ni(),S), Xo. smi, pp. 2H0-20.',, //V/.s. .S).— Next to the horse 

 the camel is considered the most important animal of transport affected, 

 acariasis being very prevalent among them. ^lules are freiiuently used on 

 field service, but in the author's opinion are less subject to scabies. The ass, 

 sometimes used for pack pnri)oses, though receiving little or no care is not 

 affected to any extent, and when affected it is usually with the psoroptic 

 acariasis. 



On the prophylaxis of trypanosomiasis, with particular reference to the 

 influence of the camel in India, R. E. Montoomeky {Jour. Trop. Vet. ScL, S 

 {i908), No. 3, pp. 30I-S29).— The author discusses this subject at some length. 

 Attention is called to the fact that the basis of trypanosomiasis prophylaxis is 



