When a cow is with calf she has strong sympathetic feelings. The foetus and after-birth from a cow that has slinked are very offensive, and if left within reach, the other cows will sniff at it, and bellow around it; and in a short time more of the cows will abort. Many reasons have been given as the cause of abortion; from my own observations, frosty turnips are one great cause, and I never allow my cows to get these. If I happen to run short of fresh turnips from the store, and frosty weather continue, I order the cows straw and water, and perhaps a little cake or corn at the same time. I have paid dearly for this experience also. I believe hove to be another cause of abortion; and that particular atmospheric conditions have a good deal to do with it. The skilful veterinary surgeon should be consulted; he will probably recommend physic to cool the system, the foetus and placenta to be buried, the animal separated, and the cow-house disinfected. The cow should be fattened and sold, unless she be a very valuable breeding animal, as the chances are that she will slink again. I have indeed seen a cow, after slinking, breed regularly for many years; but the sure way is to get quit of her to the butcher, if she is not a valuable breeding animal. I have explained, under the head of Milk-Fever, the treatment previous to calving; I shall add that a cow ought to be let dry six weeks at least before calving. It is well known that a cow that is milked up to the time of calving proves very deficient as a milker for the season, even although she had formerly been a good one. It prevents improvement of condition; and from a very lean cow there is not much to be expected. As to natural labour a very few remarks will suffice. The cow should be disturbed as little as possible, and no assistance rendered where it is not necessary. When the water-bag comes away, the hand should be introduced to ascertain whether the calf is coming the right way; its fore-legs protruding to the passage, and its head lying upon them or a little between them, is the natural position when all is right. We must have patience, and, if possible, allow nature to effect its object; but if six or eight hours shall have passed, assistance must be given. In my practice I have observed that when the water-bag comes away in the early stages the labour is protracted. I have seen many tail-presentations, but I have found them easily dealt with by pushing back the hind-quarters and getting hold of the feet; pushing backwards, forwards, and upwards the hind-legs, and bringing them to the level of the passage, the calf will be easily extracted. In unnatural labour the veterinary surgeon should be immediately called in. Skellet 'On the Parturition of the Cow' is the most valuable authority I am acquainted with on unnatural labour, but I fear it is out of print.