SIR KNIGHT SILAS LEON SMITH, New Orleans, La., asks for a formula for making paper which can be exposed in the camera like a plate. Calotype-paper is probably the paper which Sir Silas says he has seen described, and which produces a positive picture when exposed in the camera. The process is too long to describe in the space devoted to the "Answers to Querists," but the formula may be found in _Wilson's Cyclopedia of Photography_, which is in most public libraries. Sir Silas sends a formula for sensitizing paper to produce a red image, for which he will please accept thanks. The formula will soon be published in the Camera Club, and credit given. SIR KNIGHT FRANK EVANS, JUN., sends the following formula for developer, which he recommends both for plates and for bromide paper. EIKONOGEN DEVELOPER. NO. 1. Sulphite of Soda (Crystals) 3 oz. Hot Water 45 " Thoroughly dissolve, then add 1 oz. of eikonogen. No. 2. Sal Soda 4 oz. Water 15 " To develop, take of No. 1, 3 oz.; No. 2, 1 oz. This developer can be used over again. * * * * * Questions and Answers. Irving R. Kenyon asks what paper should be used and what rules should be followed by persons submitting manuscripts to editors. It is not a matter of paper or rules that determines the value of poetry or prose articles. True, there are a few rules, but they are those dictated by convenience chiefly. For instance, write on one side of the paper only. Do not roll manuscripts. Fold them. Use common letter-paper, any convenient size. Write plainly, punctuate according to your judgment, and insert paragraphs where needed. If you can do so, have your manuscript typewritten. This is not a condition to its acceptance; merely a more easily read form for it. Put your name and full address at the top of the first sheet. A long letter to the editor is unnecessary. You can say that the manuscript is submitted at the publisher's regular rates, if you wish. These rates vary from 1/2 to 3 cents per word, with perhaps 1 cent per word as the average. Newspapers pay by the column, but rarely more than 1/8 cent per word. Anything beyond these simple rules is needless. Whether or not your production is accepted depends on many conditions: Its merit; its suitability to the publication to which you send it; the supply of such matter which the editor has already in hand, etc.