ADVERTISEMENTS. 
71 
From the Farmers’ Library. 
ANOTHER GREAT DISCOVERY IN VACCEREOLOGY. 
HOW TO JUDGE A OOW. 
Since the days of Doctor Jenner’s discovery of vaccination, or 
the cow-pox, being an antidote to the small-pox, nothing has 
appeared so extraordinary in that department of natural history 
as the discovery by M. Guenon, the son of a French gardener, of 
the means of ascertaining the quality of milch Cotes by ex¬ 
ternal and visible signs over the milk region of the animal. 
The signs have been reduced to a clear system, and by com¬ 
mittees of various agricultural societies in France pronounced 
“ infallible,” after repeated and most careful trials. 
The work was translated by Mr. Trist of the State Depart¬ 
ment, and published with numerous engravings explanatory of 
the system, first in the Farmers’ Library. But the publishers, 
not willing to withhold a discovery so important and valuable 
from the poorest person owning or wishing to own a cow, have 
published it in a separate and cheap form, and it may be had at 
the Tribune office, or at most of the cheap publication offices in 
the United States. 
While those who have given to this work even the slightest 
tests aver that with it for their guide, they are not fearful of ever 
again buying an indifferent Cow ; others, who have been more 
minute and careful in applying the “signs” to living animals, de¬ 
clare, like the French agricultural committees, that the marks 
are obvious and worthy of every reliance. 
The following, from sources of unquestionable veracity and 
practical knowledge, are submitted in proof of the truth of this 
wonderful discovery. But, independently of the great value of 
the cow-book for the purposejm question, other matters attached 
to it will fully recompense the purchaser for the trifling cost of 
the book itself, which is but 38 cents. Booksellers and Pub¬ 
lishers may be supplied at the usual discount. 
Under the operation of this system, which enables every one 
to select and put aside for the butcher calves that will be sure to 
prove bad milkers, the whole race of milch cattle may be rapidly 
improved throughout the Union. Every great discovery appears 
to be strange, and some of them incredible in the first instance, 
and few more than vaccination itself. With such testimony in 
support of this discovery of M. Guenon, no paper in the Union 
ought, we would think, to withhold a knowledge of it from their 
readers. 
Vve have received quite a number of letters from different parts 
of the country fully corroborating the theory of M. Guenon. We 
select for publication the following :— 
Princeton, Mass., October 15th, 1846. 
Dear Sir : I received your favor of the 8tli inst. desiring me 
to state my opinion of the value ofM. Gudnon’s Treatise on 
Milch Cows, translated from the French, and published in The 
Farmers’ Library. On my first meeting with this Treatise, I was 
impressed with its value, from my previous knowledge of some 
general marks whereby the milking properties of cows may, in 
some measure, be determined, and from the fact that I had my¬ 
self noticed the oval marks above the hind teats, mentioned by 
M.Gudnonas indicating good milking qualities, that I imme¬ 
diately commenced fhe study and application of his method to 
every cow that came under my observation. I have examined 
more than one hundred cows, and after carefully marking their 
escutcheons 1 have become satisfied that M. Guenon’s discovery 
is one of great merit, and can be relied upon as true. I have no 
doubt that I can judge very nearly as to the quantity and quality 
of the milk any cow will give at the height of her flow, and also 
the time she will continue in milk after being with calf. 
The way taken to convince myself of the truth of M.Gudnon’s 
method has been to visit the cow-yards of some of our principal 
dairy farmers, and examine the escutcheons and marks on their 
cows, and make up my judgment as to the quantity and quality 
of milk each cow would give at the height of her flow, and how- 
long she would continue in milk after being with calf; then in¬ 
quire of the owmers how much milk their several cows would 
give at the height of their flow, and how long they would hold 
out after being with calf; comparing the owner’s account with 
my own judgment. I find I have mistaken in only five cases, out 
of more than one hundred examined. 
I have great confidence in M. Gudnon’s method of testing the 
milking properties of cows, and consider it one of the great dis¬ 
coveries of the age. The advantage of this discovery to our 
dairy-farmers, enabling them, as 1 think it does, to determine the 
milking properties of their young stock at an early age, must be 
very great, and will be appreciated by every one who is in the 
slightest degree acquainted with the subject. Tn my opinion no 
dairy-farmer, after acquainting himself with M. Guenon’s dis¬ 
covery, need possess himself of a bad milking cow. 
M. Gudnon informs us that his system is applicable to calves 
three or four months old. I have traced the escutcheons upon 
calves as early as two or three weeks old, and I see no reason 
why their value as future milkers may not be judged of at this 
age as well as at any other age. Yours, respectfully 
To J. S. Skinner, Esq., JOHN BROOKS. 
Editor of The Farmers’ Library, New York City. 
Paterson, N. J., Decemher 19th, 1846. 
Dear Sir: I have read with great satisfaction M. Gudnon’s 
work on Milch Cows, by which one can judge by certain infallible 
signs, the milking qualities of the animal. I have compared the 
I marks he gives for his first grade Flanders cow, and find they 
1 correspond with the escutcheon of my favorite Devon Cow Ellen , 
that has taken the first premiums at the two last cattle shows of 
the American Institute. My farmer has great faith in M. Gud¬ 
non’s work, and so has one of my neighbors, a knowing Scotch 
milk-man who keeps fifty cows. He says that after careful ex¬ 
amination he places confidence in these marks, and they will 
govern him in his future purchases. 
I return you my sincere thanks for giving to us farmers this 
valuable treatise of M. Guenon. I .shall hereafter make my 
selection of the calves l will raise from my choice stocks from 
the marks given by this author. I think every farmer should 
own this work. With regard, yours, &c., 
ROSWELL L. COLT. 
To the Editor of the Farmers’ Library. 
The above work is published and sold by GREELEY & McEL- 
RATII, New York, Publishers of Skinner’s Farmers’ Library and 
Monthly Journal of Agriculture. Three copies sent by mail for 
$1.00. January, 1847. 
SOUTHERN AGRICULTURAL WAREHOUSE, 
THE subscriber has just opened an Agricultural Warehouse at 
New Orleans, where he will constantly keep on hand a very 
general assortment of plows suitable for the Southern planter, 
together with harrows, rollers, cultivators, horse-powers, grain 
threshers, rye threshers and hulling machines, fanning mills, 
burr stone and cast iron grain mills, corn and cob crushers, corn 
shellers and huskers, vegetable.cutters, straw cutters, seed sow¬ 
ers, wheelbarrow's, trucks, grain cradles, ox yokes, shovels, 
spades, forks, scythes, rakes, axes, hoes, picks, chains, churns, 
grindstones, &c., &c. 
Among his plows are those from the celebrated factory of Rug- 
gles, Nourse &. Mason, of Worcester ; from A. B. Allen of New 
York ; and R. Sinclair Jr., & Co. of Baltimore. 
Castings of all kinds of patterns extra for the above. 
Agricultural Books, a complete assortment. 
Orders will be received for horses, cattle, sheep, and swine, 
fruit trees and shrubbery ; and any other articles planters may 
wish to order from the north. 
R. L. ALLEN. 
New Orleans, Dec. 1, 1846. 
A DESIRABLE FARM FOR SALE, 
SITUATED in Paducah, Kentucky, on the Ohio, at the mouth 
of Tennessee River, containing 900 acres, 150 of which have been 
cultivated with grass, grain, tobacco, sweet potatoes, orchards, 
&c. This estate is well wooded and watered, and is in every 
respect adapted for a grazing or stock farm. The improvements 
otherwise consist of a neat commodious dwelling and kitchen, 
a smoke house, an out-house for servants, stables for cattle, a 
tobacco barn with a press, and a large cistern lined with cement. 
If desirable, the purchaser can have at a reasonable rate, all the 
stock, household furniture, and implements on the place, most of 
which are nearly new and in good condition. Price of the farm 
$3,000. Terms easy. For further particulars apply personally 
or by letter, post-paid, to A. B. Allen, 187 Water st. N. York, or 
the subscriber on the premises. EDWARD TROYE 
Paducah, Ky., Jan. 4, 1847. - 2t 
FARMERS’, GARDENERS’, AND PLANTERS’ 
STORE.— Cf. jVUNN, Louisville, Ky. 
500 bush, clean Kentucky Blue Grass 
500 “ “ Orchard Grass, 
300 “ “ “ Red Top, 
200 “ u Red Clover, 
100 “ “ Timothy, 
200 “ “ Ilemp-seed, 
200 “ « Barley, 
200 “ “ Rye, 
100 u “ Heavy Seed Oats, 401bs. per bushel, 
Also—Lucerne, White, Dutch Clover, Millet, Potatoes, Arti¬ 
chokes, Beans, Yams, Apple Seeds, Peach Pits, &c. &c. together 
with a large stock of FRESH OARDEJY SEEDS, by the 
pound, ounce, or in gapers, put up to suit any market. A liberal 
discount made to dealers. 
Also a large stock of Agricultural and Horticultural Implements, 
such as Plows, Harrow's, Corn-shellers, Cultivators, Straw- 
cutters, Fanning-mills, Hoes, Rakes, Spades, Shovels, Axes, 
Trace-chains, Churns, Scythes, Cradles, Knives, &c &c. Ordeus 
from abroad will meet with prompt attention. 
N. B. Agent for various Nurseries East and West. 
AMERICAN AGRICULTURE. 
BEING a condensed Encyclopaedia of Northern and Southern 
Farming, embracing Soils, Manures, Draining, Irrigation, and all 
staple productions, as the grasses, grain, roots, and miscellaneous 
articles; cattle, the dairy, horses, sheep, mules, swine, and 
poultry ; (heir treatment,food, diseases, See , &c. Price $1 retail. 
A liberal discount to the trade. For sale bv 
SAXTON & MILES, 205 Rroadway. 
A. B. ALLEN, 187 Water Street. 
