GuenorHs System of Selecting Cows hy the Escutcheon. 487 
Professor Arnold, a high authority in this country on dairying 
matters, quotes Monsieur Magne, and adds : 
"But none of these indications, taken singly, is an infallible 
evidence of large yield. They must be considered together. 
A large escutcheon and milk-veins, coupled with a small 
stomach, would be marked down at least one half of what they 
might otherwise signify ; and a large digestive apparatus, 
coupled with small milk-veins and escutcheon, should be marked 
down in the same way. Keeping the leading indications in 
view, observation will soon enable one to make close estimates." 
Doctor D. E. Salmon, one of the ablest veterinarians in this 
country, has discussed this question in a very clear manner. I 
have printed this article in my handbook, from which I quote 
the following, though such fragments of his argument do not do 
him or it justice : 
" Magne's ^ac^s are correct, whether his inferences are or not. 
The same artery that supplies the udder with blood supplies the 
skin on ivhich the escutcheon is formed ; and, more than this, the 
artery ramifies in the direction in lohich the hair of the escutcheon 
groics. 
The Dutch-Friesian Cattle-Breeder's Association have adopted 
rules that no cattle can be entered in their registry unless they 
have the higher classes and orders of escutcheons as laid down 
by the Pennsylvania Commission. 
General View of the Subject. — This science of Guenon is no 
new thing, nor a thing of a day. It was adopted, after ample 
testing, by the leading agricultural societies, and by the govern- 
ment of France. The ablest scientific men have tested and 
approved of it in all countries ; yet until within a few years 
it has never been popularised in this country. The translation 
of Guenon's book by N. P. Trist gave only a portion of it ; and 
at that time his system was crude and incomplete, and it has 
never been altered, or brought up to Guenon's revised rules 
and alterations, to this day. It still maintains the numerous 
divisions and subdivisions, amounting to two hundred, into 
which Guenon separated it with the exactness of an enthusiast, 
making it very forbidding, and dismaying many, nearly every 
one, from taking hold of it. In his later issues Guenon 
simplified it very much, making more distinct classes, and 
reducing the number of orders, and giving a separate treatise on 
bulls. In order to simplify it much more, I have prepared a 
handbook,* and with so many illustrations, as to enable any 
intelligent man to become master of it in thirty days. 
In 1878-79 a Commission acted under the orders of 
* ' How to select Cows on the Guenon System.' 
