=44. Daguerreans.= The process consists in concentrating the light of the sun on a metal plate, so prepared by chemicals as to retain the impression of an image that falls upon it. The shadow catcher has become almost interwoven with the every-day realities of life. Prof. Draper speaks of daguerreotyping as introducing a beautiful work, in which "the fair sex may engage without compromising a single delicate quality of woman's nature." Some artists, not content with moving in the ordinary way from place to place, have cars built that roll on wheels and are drawn by horses. The daguerrean sleeps in his little home, and, on the road, far away from a good tavern, can even do his own cooking, or have it done, in his car. The business has also been carried on by men in small boats, floating down rivers and stopping at villages and farm houses. It requires taste and judgment both to make an operator and to color. Colorers of photographs could, if skilful and constantly employed, earn $30 a week in large cities. An operator, if busy, works from 9 to 5 o'clock in winter. A wonderful improvement has taken place in the daguerrean art since its discovery. A lady daguerrean and photographer writes me: "Ladies are employed in the business as operators, and to superintend; also to repaint and retouch photographs. With care in the use of chemicals, I do not consider it particularly unhealthy; less so, I think, than sewing by hand or machine. No person will do well for himself, herself, or patrons, who commences business without a good knowledge of it. The time of learning will depend upon the individual's knowledge of the sciences bearing on photography, and their talent for the business. It would vary from two weeks to three months. The labor of the learner is usually given while learning, and from $25 to $100 besides. Spring and fall are the best seasons, summer the poorest; but there is no time during the year in which there is not something to do. I operate and superintend in my own establishment, and hire a boy only, who does chores. The principal discomforts of the business are the heat to which we are exposed in summer (being usually and necessarily near the roof), the smell of chemicals (which do not unpleasantly affect any one), and the soiling of clothing, which is more unavoidable with women. The amount of business, and consequently the location, decide the profits of the business. As the business is attended with considerable expense, it is necessary, in order to make it pay, to seek a good location. It is profitable when a person is well established in a desirable location. I think ladies and children usually prefer a lady artist. Upon the whole, I think the business quite as suitable for women as men. There is generally more or less spare time, but a woman is most apt to occupy such time with fancy work or reading." A daguerrean writes: "Women are sometimes employed in the reception room to receive ladies--occasionally, in the operating room.