310 
PROF. ROBERTSON. 
ease as a materia] for inoculation. This, it may be mentioned, is 
the means recommended by the French experimenters already 
named, and extensively employed in France. This material, or 
“ vaccine,” is now an article of commerce in France, so, having 
ascertained by letter from M. Arloing that M. Fromage, of Paris, 
was his agent for its sale, we obtained from this source the re¬ 
quisite supply. 
Through the kindness of C. de Murietta, Esq., of Wadhurst 
Park, Sussex, six young cattle were placed at our disposal for ex¬ 
perimentation. 
On the 21st of August, Professor Penberthy inoculated these 
animals in the manner prescribed, with M. Arloing’s vaccine, the 
second inoculation being executed ten days afterwards. These 
animals were tiien, with six others, placed in a pasture tradition¬ 
ally notorious for the fatalities of quarter-ill occurring in it. The 
internal temperatures of the animals were regularly taken and 
registered, but these showed little variations from normal. Two 
months elapsed without appreciable change in the animals. On 
the 30th of November three of the vaccinated and three unvac¬ 
cinated animals were tested by an injection of 4 C. C. of virulent 
muscle-juice taken from a fatal case of quarter-ill. Save slight 
lameness of one of the vaccinated and one of the unvaccinated 
beasts, no unnatural effects followed. 
A further testing of the remaining vaccinated and a similar 
number of unvaccinated cattle was attended with like negative re¬ 
sults. That the material employed in this testing was of a viru¬ 
lent nature, was proved by its producing quarter-ill in a guinea- 
pig on which it was used, this creature succumbing in twenty- 
eight and a half hours. 
In the light of other experiments which followed, the results 
of these at Woodhurst Park are not easy to explain. The sus¬ 
ceptibility of animals to contract this disease we know is influenced 
by conditions residing in the animals themselves, as well as by 
such as operate from without, but whether these cattle were ren¬ 
dered more refractory from being located in this particular situa¬ 
tion, where the disease is said to have an abiding existence, is yet 
uncertain. 
