Next examine the hocks: observe that, as you stand on either side of them, there should not be any projection at the back of the joint called a curb; and as you stand behind them, that the inside of the joint down below should be free from little knots, or bony excrescences, which are bone spavins; and on looking at them in a slanting direction, that there should be no tumour above, or blood spavin. Look down between the horse's forelegs for these defects, as it frequently hap pens that they are better seen from that view. An enlargement of the cap of the hock does not often cause lameness, though it is a blemish; but enlargements on each side of it, which upon pressure fluctuate from the inside of the joint to the outside, are termed thorough pins, which are in fact windgalls, and often cause very obstinate lameness.