Mangels, swedes, turnips, and carrots, and also potatoes, which may be placed in the same group lor convenience, are extremely useful articles for admixture with other articles of food, and they afford an opportunity of varying the diet from time to time. It has already been remarked that raw potatoes in certain conditions are poisonous, and especially is this the case in regard to the skins; consequently potatoes, when used for horse food, should always be boiled. The same precaution should also be taken when swedes are used. Mangels sometimes are used for horse food, and carrots are extremely valuable and are also very favourite articles of food with horses. In consequence of the exceeding fondness of horses for carrots, even in their dirty condition, it is desirable that they should be washed. Usually they are given whole, a few being thrown into the animal's manger. Now and then a case of choking has resulted from a horse swallowing large portions too greedily. To avoid this it is suggested that the carrots should be either sliced or grated; the latter process, however, is far too troublesome to be generally adopted, and in regard to slicing, unless it is very carefully done, some irregularly shaped pieces may escape the teeth and become impacted in the oesophagus.