J. E. L. _is thanked_. _We can assure him that the present result of much consideration and many communications, both by letter and personally, is to impress us with the feeling that the majority approve. The book-men shall, however, be no losers._
NEW ORDINARY OF ARMS. _The anonymous Correspondent on this subject will obtain the information of which he is in search on reference to its Editor, Mr. J. W. Papworth, 14 A. Great Marlborough Street, London._
ALDIBORONTOPHOSKOPHORNIO--WORLD WITHOUT A SUN. _The many Correspondents who have replied to these Queries are thanked._
C. (Pontefract) _is requested to forward copies of the Queries in question_.
REV. E. B. (B***) _is requested to state the subject of his communication. In his last very extraordinary letter he has omitted this important piece of information._
C. E. F. _who complains of the disappearance of a portion of the collodion film at the spot where the hyposulphite of soda is applied, is informed that this is by no means an uncommon occurrence, and indicates the feeble action of the light at the present time of year. By using the glass a little larger than is required, as has been before recommended, and pouring the hyposulphite of soda on the portion which is to be cut off, and allowing it to flow over the picture, the defect will generally be avoided. A much stronger solution of the hyposulphite of soda may be used--say, one ounce to two ounces of water; and then, by preserving the solution, and using it over and over again, a more agreeable picture is produced. The solution, when it becomes weak, may be refreshed by a few crystals of the fresh salt added to it._
F. W. _If the bath of nitrate of silver produces the semi-opaque appearance upon the collodion, in all probability there is no hyposulphite of soda in the bath: three or four drops of tincture of iodine added to each ounce of the solution of nitrate of silver in the bath, often acts very beneficially. All doubtful solutions of nitrate of silver it is well to precipitate by means of common salt, collect the chloride, and reduce it again to its metallic state. The paper process described by DR. DIAMOND in our 166th Number is calculated both for positives and negatives._