The pleasantest and perhaps the most useful is medication by means of the atomizer.

An almost innumerable variety are on the market, but for all practical purposes they may be divided into two classes: those intended to be used with the hand bulb, and those where the air pressure is furnished by some auxiliary means. The former may again be divided into single bulb and double bulb instruments. As far as results are concerned the single bulb is quite as satisfactory as the double bulb, the chief difference being that the double bulb atomizers produce a continuous spray and approxi mate more closely the steadiness of the spray produced by the power atomizers.

In selecting a hand atomizer the two points to be borne in mind are: as short a distance from the liquid to the tip of the atomizer as possible and still reach the part desired: a tight and easilv working valve in the bulb. For general use the hard rubber instruments are quite as satisfactory as the more expensive metal ones.

If the medicament to be used is very heavy, as an oil, the ordinary instruments will not be found to work satisfactorily and a heavier atomizer will be necessary.

Almost every rubber manufacturer has placed on the market three or four different styles of atomizers, the prices ranging from a few cents to several dollars. The result has been that a large number of these are not only unsatisfactory, but many of them absolutely worthless.

That type of atomizer where the air is furnished by an auxiliary force is more particularly designed for a stationary apparatus, and consists of several different containers and tips to which may be attached a tube from the source of air supply, which latter is controlled by a small valve. The source of air supply may be a tank or an air pump, furnishing a pressure of from 30 to 50 pounds. This naturally produces a very fine spray, is under more perfect control, and is decidedly easier to manipulate than the hand instrument For nasal treatments the hand atomizer is better, as the more powerful apparatus can positively injure the delicate mucous membrane. The solutions used may be classed as:

1. Sedative. - These are alkaline, and may be represented by Seller's solution.

2. Astringent - Suprarenal, tannic acid, silver nitrate solutions, etc.

3. Antiseptic. - Boric acid solution, hydrogen peroxide solution, etc.