Progress of Rational Pathology. 249 



j. Itch. — It cannot be propagated by the inoculation of 

 fluid matter from the itch pustules, any more than by its 

 scabs. 



k. Syphilis, — Ricord's results as to inoculation have been 

 confirmed by several observers in the main points. Hauck 

 rejects the designation oifluor albus syphiliticus, as leucorrhcea 

 never produces syphilitic sores, if there be not at the same 

 time syphilitic ulcers deep in the vagina or at the neck of the 

 uterus. Castelnau, like Ricord, finds the ulcers of secondary 

 syphilis not inoculable, but considers inoculation altogether 

 to be an uncertain diagnostic sign, since even fresh chancres 

 are not always to be propagated by inoculation. Donne's 

 Trichomonas vaginalis was repeatedly found in the vagina 

 of syphilitic patients by Henle, as were fungi in the mucous 

 lining of the walls of the vagina. 



/. Hydrophobia. — Breschet has ascertained, that the disease 

 can be inoculated back to dogs, from men and other animals 

 who have got the disease by the bite of mad dogs, not spon- 

 taneously. He thinks also, that he has observed that the poison 

 loses much of its strength in the third and fourth genera- 

 tion. The consequences of infection usually display themselves 

 between the 20th and the 30th day after the bite, at times 

 not till after three months. It would also appear, that the 

 poison is present in the blood, even during the latent stage of 

 the contagion, for two ewes that had been bitten, gave suck 

 to their lambs for fourteen days after it had happened, and 

 four weeks afterwards the ewes became mad, and were fol- 

 lowed by the lambs nine or ten days after. 



*m. Disease of jaws and hoofs in cattle. — Although the ac- 

 tual contagiousness of this disease has not been proved by 

 inoculating back from man to animals, yet repeated experi- 

 ments prove the injuriousness of eating milk, butter or cheese 



* (£?* See note at P« 25 °- 



