'Treatment'.--In commencing the treatment of this disease, it will be necessary first to prescribe some alterative medicines, as balls of aloes and rhubarb, and protect the animal from all severe atmospherical vicissitudes. This precaution, in connexion with mild astringent injections into the seat of the disorder, will generally effect a cure. 'Injections for Ozæna'. No. 1. [Symbol: Rx] Sulphate of Zinc.........................grs. v to x. Water..............................[Symbol: ounce] i. Mix. No. 2. [Symbol: Rx] Alum.............................[Symbol: scruple] ii. Water..............................[Symbol: ounce] i. Mix No. 3. [Symbol: Rx] Chloride of Soda........................grs. v. to x. Water..............................[Symbol: ounce] i. Mix. No. 4. [Symbol: Rx] Teneriffe, Madeira or Sherry wine..[Symbol: ounce] i. Extract of Tannin.............................grs. iv. Mix. [Any of the above injections will answer a good purpose. No. 3 is particularly useful to correct the fetidness of the discharge. When the disease is an old chronic affection, it should not be arrested too suddenly by astringent injections; in such cases it will be better to insert a seton in the poll, and thus keep up a drain from the system after the suppression of the other.--L.] THE SENSE OF SMELL. In the dog we trace the triumph of 'olfactory power'. How indistinct must be that scent which is communicated to, and lingers on, the ground by the momentary contact of the foot of the hare, the fox, or the deer; yet the hound, of various breeds, recognises it for hours, and some sportsmen have said for more than a day. He also can not only distinguish the scent of one species of animal from another, but that of different animals of the same species. The fox-hound, well broken-in, will rarely challenge at the scent of the hare, nor will he be imposed upon when the crafty animal that he pursues has taken refuge in the earth, and thrusts out a new victim before the pack. The sense of smelling is, to a certain degree, acute in all dogs. It is a provision wisely and kindly made, in order to guide them to their proper food, or to fit them for our service. It may possibly be the medium through which much evil is communicated. Certain particles of a deleterious nature may be, and doubtless are, arrested by the mucous membrane of the nose, and there absorbed, and the constitution, to a considerable degree, becomes affected. Hence appears the necessity for attention to ventilation, and especially to prevent the membrane of the nose from being habitually stimulated and debilitated by the effluvia generated in a close and hot kennel.