Well, why not? Every time you paint you look over your brushes and pick out those which look friendly to what you are going to do. You want all sorts of brushes. You can't paint all sorts of pictures with the same kind of brush. Your brush represents your hand. You must give every kind of touch with it. You want to change sometimes, and you want a clean brush from time to time. You don't want to feel that you are limited; that whether you want to or not these four brushes you must use because they are all you have! You can't paint that way. That six dozen you will not buy all at once. When you get your first outfit, get at least a dozen brushes. As you look over the stock and pick out two or three of this kind, and two or three of that, you will be astonished to see how many you have—yet you don't know which to discard. Don't discard any. Buy them all. Then, if you don't paint, it will not be the fault of your brushes. And from time to time get a half a dozen which have just struck you as especially good ones, and quite unconsciously you acquire your six dozen—and even more, I hope!
Bristle and Sable.—The brushes suitable for oil painting are of two kinds,—bristle and sable hair. Of the latter, red sable are the only ones you should get. They are expensive, but they have a spring and firmness that the black sable does not have. Camel's hair is out of the question. Don't get any, if you can only have camel's hair. It is soft and flabby when used in oil and you can't work well with such brushes. The same is true of the black sable. But though the red sables are expensive, you do not need many of them, nor large ones, so the cost of those you will need is slight.
The only sables which are in any degree indispensable to you are the smaller sizes of riggers. These are thin, long brushes which are useful for outlining, and all sorts of fine, sharp touches. You use them to go over a drawing with paint in laying in a picture, and for branches, twigs, etc. As their name implies, you must have them for the rigging of vessels in marine painting also. The three sizes shown in the cut on the opposite [page] are those you should have, and if you get two of each, you will find them useful in all sorts of places. When you buy them, see that they are elastic and firm, that they come naturally and easily to a good point, without any scraggy hairs. Test them by moistening them, and then pressing the point on the thumb-nail. They should bend evenly through the whole length of the hair. Reject any which seem "weak in the back." If it lays flat toward the point and bends all in one place near the ferrule, it is a poor brush.
These three larger and thicker sizes come in very useful often and it would be well if you were to have these too. Sometimes a thick, long sable brush will serve better than another for heavy lines, etc.
All these brushes are round. One largish flat sable like this it would be well to have; but these are all the sables necessary.