Most of the transparent stereoscopic photographs sold in such numbers by all our eminent opticians, _are actually produced_ in the way recommended by MR. STEWART; and reduced copies of photographs, &c., have been produced in almost every possible variety by DR. DIAMOND, and many others of our most eminent photographers. Very early in the history of this science, the idea was suggested by Mr. Fox Talbot himself, of taking views of a small size, and enlarging them for multiplication; and, if I am rightly informed, Mr. Ross was applied to to construct a lens specially for the purpose. Some months back, as early at least as March or April in the present year, Mr. F. H. Wenham actually printed on common chloride paper a _life-size_ positive from a small negative on collodion; and immediately afterwards adopted the use of iodized paper for the same purpose; and after he had exhibited the proofs, I myself repeated the experiment. In fact, had there been time at the last meeting of the Photographic Society, a paper on this very subject would have been read by Mr. Wenham; but the {86} business before the meeting was too extensive to admit of it. My object is not, of course, to offer any objection to the proposition, but simply to put in a claim of merit for the idea originally due to Mr. Fox Talbot, and secondarily to Mr. Wenham, who I believe was an earlier operator in this way than any one. GEO. SHADBOLT. _Yellow Bottles for Photographic Chemicals._--As light transmitted through a yellow curtain, or yellow glass, does not affect photographic operations, would it not be desirable to keep the nitrate of silver and its solutions in yellow glass bottles, instead of covering the plain white glass with black paper, as I see directed in some cases? CERIDWEN. * * * * * Replies to Minor Queries. _Donnybrook Fair_ (Vol. vii., p. 549.).--ABHBA will find his answer in D'Alton's _History of the County of Dublin_, p. 804.: "About the year 1174, Earl 'Strongbow' gave Donnybrock (Devonalbroc), amongst other lands, to Walter de Riddlesford; and in 1204, King John granted to the corporation of Dublin license for an _annual eight-day fair here_, commencing on the day of the finding of the Holy Cross (May 3rd), with similar stallages and tolls, as established in Waterford and Limerick." This scene of an Irishman's glory has been daguerreotyped in lines that may be left in your pages, as being probably quite as little known to your readers as is the work above cited: