Prof. H. J. Detmers on a Pathogenic Schizopliyte. 471 



which have since been received by tlie Paris Museum ; so that 

 this character is thus shown to be a constant one. It seems 

 probable, however, that it will in the end be found unneces- 

 sary to retain ScaptocMrus as a genus distinct from Talpa^ 

 since T, leptura has so exactly the same broad muzzle and 

 stout powerful teeth, and the difference in the dental formula 

 only consists ^of the absence of one of the two minute teeth 

 following the canine-like first lower premolar. 



The following are the four different dental formulse found 

 among the moles : — 



Inc. I, C. I, P. M. f , M. f , X 2 = 44. ( T. eurojioia, cceca, 



Inc. It; C. \, P.M. f , M. I, X 2 = 42. {T. loogura and 

 Inc. I, C. }, P.M.f, M.f,x2 = 42. {T. leucura and 

 Inc. f, C. ], P.M. §, M. f, X 2 = 40. {8. moschatus.) 



LI. — Remarks on a Pathogenic Schizophyte %. 

 By Prof. H. J. Detmers. 



When about two and a half years ago it became my duty to 

 investigate the prevailing Swine-plague, the so-called Hog- 

 cholera, I first endeavoured to ascertain the nature and the 

 cause of that disease, and to accomplish my object made 

 numerous post-mortem examinations, and paid special atten- 

 tion to the microscopic examinations of the blood and of the 

 morbid products and morbid tissues. Although the micro- 

 scope at my disposal at the beginning of my investigation was 

 only a small No. viii. Hartnack stand with three Hartnack 

 and Prazmowski objectives (a 1-inch, a |-inch, and a J-lnch 

 imm. and correctives) , and consequently not a strictly first- 

 class instrument, and in its performance by no means equal 

 to the work of a Tolles or a Zeiss, I soon became convinced 

 that the blood, the morbid products, and the morbid tissues of 



* Giintli. P.Z. S. 1880, p. 441. 



t Prof. Owen (Odont. i. p. 416, footnote) says, "In the T. moogura, 

 Temm. (lege tvof/ura), the inferior canine is absent.'' From the exami- 

 nation of several specimens of the Japanese mole it appears to me to bo 

 rather the third incisor which is absent, there being no space whatever, 

 when the jaw is closed, between the hinder edge of the third lower tooth 

 and the anterior edge of the upper canine; and, moreover, it is not set 

 in the same line as the first two teeth, as the third incisor is in the other 

 moles, but is placed somewhat internal to them, j ust as the canine is in 

 the common species. 



X From ' Science,' May 7, 1881. Head before the State Microscopical 

 Society of Illinois, April 8th, 1881. 



