508 
REVIEW. 
escutcheons, whereas they are limited and contracted, and such 
cows are generally bad milkers. 
M. BARTHELEMY, senior, observed, that there was nothing 
to guide us as to their turning out good or bad milkers but the 
direction of the rows of hair; and that whatever volume the 
udder might ultimately acquire, the escutcheon will become 
developed in accordance with the form it assumes from the 
beginning : so that it is not the development of the udder that 
regulates that of the escutcheon. 
M. Magne wished to explain what was meant by cows 
being called cross-bred {batardes ) . All cows, without excep- 
tion, give more milk after their second calving than after their 
first, and after the third calving than after the second. But 
there are some which, after each time of calving, retain their 
milk up to the following calving time, and others which lose 
their milk from the moment they become in calf. Some retain 
it for seven or eight months after calving; others for one, two, 
or three months, or more. Cows giving plenty of milk, but 
soon growing dry, are those properly said to be batardes. 
M. BOULEY stated the conclusion of this interesting dis- 
cussion to be, that the Systeme Guenon still remains an 
enigma, of which, fortunately, we are not compelled to be in 
the possession of the solution to render it of service to us in 
practice. Through observation of the brute we acquire facts, 
destined to remain long, if not for ever, unexplained, which are 
not the less useful to us. Thus, for example, in horses, we 
know that certain colours are found to coincide with certain 
qualities. Why, we do not know. And yet, for all that, the 
knowledge is not the less valuable to us. So it is with the 
Guneonian system. Certain directions displayed by the hair 
upon the perineum indicate in cows certain lactiferous qualities : 
this is the valuable fact ; the remainder is but accessory to it. 
