158 CONTAGIOUS DISEASES. 



that the animals affected by sim]3le cohabitation with inoculated 

 cattle suffer more than those inoculated, and die in considerable 

 numbers. 



" Third. The results of inoculation are seriously aggravated 

 by cold, wet, and exposure. The most successful cases have 

 been those attended to indoors. 



" Foxirth. In my opinion inoculation never can be resorted 

 to with success, even in Eussia, as a means of exterminatinc' 

 rinderpest. 



" Fifth. Means adopted for the cultivation or modification of 

 the virus have proved unsatisfactory, and cannot be relied on. 



" Sixth. Any liquid from the body of a sick animal serves to 

 communicate the disease by inoculation. 



" Seventh. The period of incubation is usually from four to 

 five days after inoculation, and the invasion of the disease is 

 indicated, first, by elevation of temperature, and secondly, by 

 distinct white epithelial eruptions on the inner side of the lower 

 lip, below the corner incisor, and on the inside of the nose. 



" Eighth. The cutaneous eruption not constant in natural 

 rinderpest is usually seen in inoculated animals. 



" Ninth. Sheep can be inoculated from cattle, and then again 

 cattle from sheep, without modifying the virulence of the virus. 



" Tenth. I have not witnessed any modification in the in- 

 oculation with different secretions. I have tried blood, milk, 

 abdominal fluid, contents of the intestines, frothy mucus from 

 the windpipe, saliva, and tears. 



" Eleventh. I have reason to believe that glycerine modifies 

 and then destroys the virus, as in the case of j)leuro-pneumonia. 

 On this point further experiments are required, but I feel 

 tolerably certain that mixing glycerine witli the virus of rinder- 

 pest cannot be relied upon to obtain a mild form of the disease. 



" Twcljth. All animals that escape after inoculation without 

 indicating symptoms, such as elevation of animal heat and 

 eruption in the mouth, are not protected from further attacks. 



" Thirteenth. The produce of animals which have had rinder- 

 pest is as susceptible to attacks as any other. 



" Fourteenth. Kgo, does not materially affect the results of 

 inoculation." — (Gamgee on the Cattle Plague.) 



Seeing then that the cattle plague is beyond the power of all 

 medical and hygienic remedies, and that the inoculated disease 



