682 EXPERIMENT STATION RECORD. 



and of sheep 30,118 as against 28,349. In regard to fresh beef and mutton, it is 

 stated that 338,270 and 301,239 lbs. respectively were imported from Australia. 



Among the diseases reported as occurring at the deists are foot-and-mouth 

 disease, anthrax, rinderpest, and blaclv quarter. A few cases of whipworm 

 (TricofcphaliiH afjinix) were found in young animals and large numbers of 

 filariai were discovered in the walls of the aortas of Chinese cattle and water 

 buffaloes. Stomoxijs calcitrans and the horn tiy are tlie two most common flies 

 in cattle sheds, both causing cattle a great deal of annoyance. 



Observations on rabies, with special reference to an atrophic form of 

 the disease occurring in animals, (i. Lamb and A. G. McKendrick (Set. Mem. 

 Med. and Hanit. D< iJts. India, n. scr., 1!)09, No. 36, pp. SJ/). — **A virus originally 

 obtained from a dog in the street was passetl through a series of 13 dogs, by 

 sulxlural inoculation or by intraocular injection. An Increase of virulence re- 

 sulted. The virulence of the virus was also increased for the ralibit. Negri 

 bodies were demonstrable in certain cells of tlie central nervous system of the 

 dogs of the first few passages, but not in the same cells of tlie animals of the 

 later passages." 



" Several cases of a form of rabies in the rabbit, in which progressive emacia- 

 tion is the chief symptom, are described. This type has been observed to follow 

 both subcutaneous inoculation of fixed rabbit virus and subdural injection of 

 street virus. The disease generally runs a more or less chronic course but may 

 be comparatively rapid. The fact that this condition is true rabies has been 

 exijerimentally demonstrated. On subpassage from animals dead of this form 

 of the disease typical symptoms of rabies in the rabbit have developed. Rabbits 

 showing symptoms of progressiva emaciation after injection of rabies virus 

 have been observed to recover completely. Finally this type of the disease has 

 been observed in a dog infected in nature." 



The hereditary transmission of immunity against rabies, D. Konradi 

 (Ccnthl. Bakt. ietc.^, 1. AM., Orig., 52 (1909), No. //, pp. .',91-515; aM. in Vet. 

 Rec, 22 (1910), No. 1130, p. 5H7). — Seven series of investigations conducted 

 upon dogs which had been immunized against rabies by the methods of von 

 Hogyes, in which young animals from the same litter were tested one after 

 another at various intervals of time as regards their resistance to rabies, thus 

 estimating the duration of immunity, are here repoi-ted. The investigations 

 yielded the following conclusions : 



Immunity against rabies is transmissible by heredity. The father scarcely 

 ])lays any part in the transmission of immunity, but the mother transmits it, 

 not only when she is immunized during pregnancy, but also when she has been 

 immunized before conception. The capacity for transmission of immunity 

 against rabies seems to increase during successive pregnancies. The immunity 

 is only transmissible to the first generation, and completely disappears in the 

 further descendants. The offspring of immunized animals show individual 

 differences as regards the inheritance of immunity, many inheriting it and 

 others not. Both inherited and acquired immunity against rabies are of much 

 longer duration than has hitherto, in accordance with the researches of Ehrlich, 

 been supposed. The blood serum of animals with inherited or acquired im- 

 munity has no rabicide action upon the street virus. The practice of inmnmiza- 

 tion before conception is very advisable, and can be of great utility. 



The author emphasizes the necessity in reporting investigations of stating 

 the length of time during which infected animals are observed, as otherwise it 

 is very easy to reach erroneous conclusions. 



Investigation of the cause and means of prevention of Rocky Mountain 

 spotted fever carried on during 1907-8, H. T. Ricketts [Bicn. Rpt. Bd. 



