_Printing Positives._--I will venture to assure AMATEUR that,--if he will follow DR. DIAMOND'S formula for albumenizing Canson paper, either positive or negative, viz., Chloride of sodium (salt) 5 grs. Chloride of ammonium 5 grs. Water 1 oz. Albumen, or the white of one egg, which is near enough for the purpose 1 oz. and will excite this paper by floating it for about two minutes on a solution of nitrate of silver twenty grains to the ounce, distilled water,--provided his chemicals are good, he will obtain perfectly satisfactory results. Let his fixing bath be a saturated solution of hypo. soda, and if newly made let him, as recommended by DR. DIAMOND, add 40 grains of chloride of silver to every 8 ounces of the solution. The addition of a grain of sel d'or to every 8 ounces of solution will greatly improve the tones of colour; and if, after some {407} time, the positives become more of a brown tint than he likes, let him add a small quantity of sel d'or, half a grain to a bath of from 12 to 16 ounces, and he will find the dark tints restored. I inclose a copy of the print of "Horse-shoeing," obtained precisely by the method described. It is rather overprinted; but if AMATEUR will give you his address, and you will forward it to him, it will show him what tones of colour and depth may be procured by following the foregoing directions. C. E. F. _Photographic Excursions._--A few Fellows of the Society of Antiquaries have formed themselves into a Photographic Club for the purpose of making periodical excursions into the country, and so securing accurate views of the objects of antiquarian interest in the different localities they may visit. As it is intended that a copy of every photograph so taken shall be deposited in the portfolios of the Society, the advantages likely to result from this little reunion, both to the Society of Antiquaries and to Archaeology generally, are very obvious. * * * * * Replies to Minor Queries.