Mr. Percival says, "No person hesitates to admit the advantages derivable from the castration of bulls and stallions. I do not hesitate to aver, that equal, if not double, advantages are to be derived from the same operation when performed on cows." "It is to America we are indebted for this discovery. In 1832, an American traveller, a lover of milk, no doubt, asked for some of a farmer at whose house he was. Surprised at finding at this farm better milk than he had met with elsewhere, he wished to know the reason of it. After some hesitation, the farmer avowed, that he had been advised to perform on his cows the same operation as was practised on the bulls. The traveller was not long in spreading this information. The Veterinary Society of the country took up the discovery, when it got known in America. The English--those ardent admirers of beefsteaks and roast beef--profited by the new procedure, as they know how to turn every thing to account, and at once castrated their heifers, in order to obtain a more juicy meat. "The Swiss, whose principal employment is agricultural, had the good fortune to possess a man distinguished in his art, who foresaw, and was anxious to realize, the advantages of castrating milch cows. M. Levrat, veterinary surgeon at Lausanne, found in the government of his country an enlightened assistant in his praiseworthy and useful designs, so that, at the present day, instructions in the operation of spaying enter into the requirements of the programme of the professors of agriculture, and the gelders of the country are not permitted to exercise their calling until they have proved their qualifications on the same point."--_London Vet._ p. 274, 1850. For additional evidence in favor of spaying, see Albany Cultivator, p. 195, vol. vi. We have conversed with several farmers in this section of the United States, and find, as a general thing, that they labor under the impression that spaying is chiefly resorted to with a view of fattening cattle for the market. We have, on all occasions, endeavored to correct this erroneous conclusion, and at the same time to point out the benefits to be derived from this practice. The quality of the milk is superior, and the quantity is augmented. Many thousands of the miserable specimens of cows, that the farmer, with all his care, and having, at the same time an abundance of the best kind of provender, is unable to fatten, might, after the operation of spaying, be easily fattened, and rendered fit for the market; or, if they shall have had calves, they may be made permanent, and, of course, profitable milkers.