a useful article. It is adjusted to a perfect level by thumb screws placed in its base. VIII. SPIRIT LAMPS.--The most useful and economical of those made are the Britania, as they are less liable to break; and the tube for the wick being fastened to the body by a screw renders it less liable to get out of order or explode. Glass is the cheapest, and for an amateur will do very well, but for a professed artist the Britania should always be obtained. IX. COLOR BOX.--These are generally found on sale at the shops, and usually contain eight colors, four brushes and a gold cup. The artist would, however, do well to obtain, all the colors mentioned in the last chapter of this work, and be sure to get the very best, as there are various qualities of the same color, particularly carmine, which is very expensive, and the cupidity of some may induce them to sell a poor article for the sake of larger profits. [hipho_15.gif] STILL.--Daguerreotypists should always use distilled water for solutions, and washing the plate, as common water holds various substances in solution which detract very materially from the excellence of a photograph, and often gives much trouble, quite unaccountable to many. For the purpose of distilling water the apparatus represented at Fig. 16 is both convenient and economical. It may be either wholly of good stout tin, or of sheet iron tinned on the inside, and may be used over a common fire, or on a stove. A is the body, which may be made to hold from one to four gallons of water, which is introduced at the opening b, which is then stopped by a cork. The tube d connects the neck a of the still with the worm tub,