ANATOMY OF REGIONS. 
201 
we have been unable to consider the remaining animal forms of 
variola as the genetic points of v. vaccina, there remains to us yet 
the humanized vaccine as the most dispensed—extended—of all 
the forms of variolic contagium, which is introduced by the inocu¬ 
lating doctor, in an artificial manner, in almost every house in 
the land, (Germany). We have to seek in humanized vaccine the 
spring from which the greater number of cases of bovine variola 
take their origin. 
In order to prove this assertion, I must briefly consider the 
subject of Retro-vaccination , in which I follow the previously al¬ 
luded to work of Bohn. 
Sacco was the first to employ retro-vaccination, that is, the in¬ 
oculation of humanized vaccine upon cattle, for the purpose of 
having on hand a supply of fresh lymph. The subject attained a 
great extension, in the twentieth and thirtieth decenniums of this 
century, in order to freshen and reinvigorate the lymph, which 
had become weakened by passing through more or less human 
generations, by introducing it into its original place of develop¬ 
ment, the bovine organismus. 
(To be continued .) 
ANATOMY OF REGIONS. 
Translated from Peuch and Toussaint, Precis de Chirurgie Veter in¬ 
air e } by A. Liautard, M.D ., V.S. 
Continued from Page 151. 
ORBITAL REGION AND OCULAR APPARATUS. 
Situated on the boundaries of the anterior and lateral faces 
of the head, the orbital region presents to study superficial parts 
and deep organs. The former or protecting parts of the eye are 
the eyebrows, the eye lids and the membrana nictitans. ^The 
