I obtain these results with a twenty-grain solution of nitrate of silver, a fact that will, I think, commend the plan to most operators. Thou wilt be able to judge of the result from the inclosed specimen.[7] I use Canson's paper, either albumenized or plain (but the former is far preferable). If albumen is used, I dilute it with an equal measure of water, and add half a grain of common salt (chloride of sodium) to each ounce of the mixture. This is applied to the paper with a soft flat brush, and all bubbles removed, by allowing a slender stream of the mixture to flow over its surface: it is then hung up to dry, and afterwards the albumen is coagulated with a hot iron. If the paper is used plain, a solution of common salt (half a grain to one ounce of water) is placed in a shallow tray, and the paper floated on its surface for a minute, and then hung up to dry. Excite, in either case, with an ammonio-nitrate of silver solution (twenty grains to one ounce of water), by floating the paper, prepared side downwards, for one minute, and hang up to dry. Print tolerably strongly, and the proof will be of a reddish-brown. Fix in tolerably strong solution of hypo. sodae (I never weigh my hypo., so cannot give the proportion), that either has been in use some time, or else, if new, has been nearly saturated with darkened chloride of silver. When fixed, remove the proofs into another vessel of the same solution of hypo., to which has been added chloride of gold and acetic acid. The way I do this is to dissolve one drachm of chloride of gold in two and a half ounces (1200 minims) of water. Of this I take twenty minims (which will contain one grain Au Cl_3) and forty minims of acetic acid (Beaufoy's) for every dozen proofs (of the size of 7 x 9 in.), that I mean to operate on, and having mixed the gold and acetic acid with the solution of hypo., place the proofs in it till they attain the desired colour: they are then to be washed and dried in the usual way. Knowing that so cheap and easy a process for obtaining these tints would have been a great boon to me a short time since, I lose no time in communicating this to the readers of "N. & Q." I shall feel a pleasure in explaining the plan more in detail to any photographer who may feel disposed to drop me a line. WILLIAM PUMPHREY. Osbaldwick, near York. [Footnote 7: The specimens forwarded by MR. PUMPHREY are most satisfactory.--ED.] * * * * * Replies to Minor Queries.