HUMAN AND ANIMAL VAKIOLAS. 
385 
d’aprez le rapport des bergers Albanais, les vaches sont elles su- 
jettes dans ce pays a line maladie qui parait avoir une grande 
resseinblanee avee le cow-pox des Anglais ; et ce que decide le 
question, c’est que le docteur Lafont. etabli depuis longtemps a 
Salonique, en Macedoine, a reuissi a produire la veritable vaccine 
sur deux enfants inocules avec le virus pris sur les jambes d’un 
clieval atteint de cette troisieme espece de javart, quoiqu’il ne 
prodnisit aucun effet sur une vache somnise aussi a cette inocula¬ 
tion ; et cette vaccine s’est propagee de ces enfants a d’autres par 
l’inoculation, avec ses caracteres et sa benignte ordinaires.” 
And evidence proving the existence of liorse-pox was cropping 
up now and again, though it was not readily accessible to the med¬ 
ical world of those days. For instance, in the spring of 1805, 
Viborg, professor at the Copenhagen Veterinary School, inocu¬ 
lated a cow with matter obtained from the heel of a horse affected 
with the specific form of so-called u grease.” On the fifth or 
sixth day on the udder and teats were bright transparent vesicles, 
with the characteristic areola and umbilicus of cow-pock ; and 
the cow exhibited a high degree of fever, while the secretion of 
milk was nearly suspended.* Sacco made similar experiments, 
and these and his observations are as valuable as Loy’s, confirm¬ 
atory as they were, of the existence of horse-pox, and its ready 
transmissibility to men and cows, producing an exanthem which 
could not be distinguished from cow-pock.f In 1830, Professor 
Hertwig and eleven students of the Berlin Veterinary School, 
became inoculated through handling horses affected with the dis¬ 
ease in the limbs, more particularly. This form of grease—in 
reality horse-pox—was then prevailing as an epizooty in North 
Germany.:}: In the same year Professor Ritter, of Kiel, found a 
man who had been accidentally inoculated in the hand with matter 
from horses’ heels. The vesicle or pustule exactly resembled that 
of a cow-pox, and from it lie inoculated two children ; the result 
Mas undoubted vaccine vesicles.§ In this year, also, Dr. Rosendahl, 
*“Vet. Selsk. Skiftei-,” vol. ii, p. 137. 
t Trattato di Vaccdnazione, con osservazioni sd giavardo et Vajuolo pecor- 
ini1839. 
t “ Med. Zeitung von dem Ve.oiu in P^en8se>),’ , 1834. 
ft PfafiPs “ Mittbeilungeu aus dein Gebeit der Medicin.” Iahrgang ii. Kiel, 
1833. 
