_Albumenized Paper._--If MR. HELE will follow the directions contained in a paper of mine which you published in Vol. ix., p. 206., for albumenizing paper, I think he will have no reason to complain of waves, or streaks, or blotches, and will be saved the trouble of the damping process which he uses and recommends to others. ("N. & Q.," Vol. ix., p. 254.) I have done a considerable quantity of paper of Canson, both positive and negative, and also of other makers, Whatman, Turner, Sandford, and Nash, and in all I have succeeded perfectly in obtaining an even coating of albumen. I am convinced from my own experience that the cause of waviness, &c., is due to raising the paper from the albumen _too slowly_. If the paper be snatched hastily from the solution, air bubbles no doubt will be formed; but if the paper be raised with a steady even motion, _not too slow_, the albumen will flow evenly from the paper, and it will dry with a perfectly even surface. MR. SHADBOLT is certainly mistaken in saying that positives printed from negatives will not stand a saturated solution of hypo. soda, unless they be printed so intensely dark that all traces of a picture by reflected light are obliterated. I have used nothing but a saturated solution for fixing my positives for a considerable time, and my experience agrees with that of other of your correspondents, that the picture is not as much reduced by a saturated solution as by a weaker one. By adding about one grain of sel d'or to every eight ounces of saturated solution, very rich black tones will be obtained. I inclose a specimen of what I have got in this way. C. E. F. [The specimen sent is most satisfactory; we wish that the locality of the view had been stated.--ED.] _Mounting Positives on Cardboard._--In the absence of any other reply to J. L. S. (Vol. ix., p. 282.), the following, as the method I always adopt, may serve his purpose. Having cut the positive to the size required, and trimmed the edges, place it upon the cardboard to which it is intended to be attached, and carefully centre it; then with a pencil make a slight dot at each of the angles. Remove the proof, and lay it _face downwards_ upon a piece of clean paper or a cloth, and with any convenient brush smear it evenly over with a paste made of arrowroot, taking care not to have more than just enough to cover it without leaving any patches. Place it gently on the cardboard, holding it for the purpose by two _opposite_ angles, and with a silk handkerchief dab it gently, beginning in the middle, and work any little superfluity of the paste towards the edges, when it will be gradually pressed out. The whole may be placed in a press, or under a pile of books to dry. {333} My object in using arrowroot is simply that of having a _pure starch_ without colour, and it serves as a size to the paper, which has lost that originally in it by the repeated washings, &c.