NORTHUMBRIAN MIRROR. New Series. 1841, &c. BRITISH DIARY FOR 1794, by COTES and HALL. REUBEN BURROW'S DIARIE, 1782-1788. MARRAT'S SCIENTIFIC JOURNAL. New York. MATHEMATICAL CORRESPONDENT (American). LEEDS CORRESPONDENT. Vol. V., Nos. 1, 2, and 3. MATHEMATICAL MISCELLANY. 1735. WHITING'S SELECT EXERCISES, with KEY. WALTON AND COTTON'S ANGLER, by HAWKINS. Part II. 1784. DE LA CROIX'S CONNUBIA FLORUM. Bathoniæ, 1791. 8vo. ANTHOLOGIA BOREALIS ET AUSTRALIS. FLORILEGIUM SANCTARUM ASPIRATIONUM. LADERCHII ANNALES ECCLESIASTICI, 3 tom. fol. Romæ, 1728-1737. *** _Correspondents sending Lists of Books Wanted are requested to send their names._ *** Letters, stating particulars and lowest price, _carriage free_, to be sent to MR. BELL, Publisher of "NOTES AND QUERIES," 186. Fleet Street. * * * * * Notices to Correspondents. _The number of_ REPLIES TO MINOR QUERIES _waiting for insertion, compels us to omit our usual_ NOTES ON BOOKS, _and a number of very interesting communications_. SCH. T. C. D., _who has pointed out a curious error in Disraeli's_ Curiosities of Literature, _has been anticipated by_ MR. BOLTON CORNEY _in his_ Curiosities of Literature Illustrated, p. 144. _et seq._ A. B. R. _Yes, as at present advised._ S. W. L. _is assured that the communications to which he refers interest as large and intelligent a class of readers, as will feel an interest in the communication which he proposes to forward, and which we shall gladly receive_. C. D. W. T. (Jun.) _is thanked: but the edition is too well known to all the Communicators, to require that he should be troubled upon the subject_. J. H. W._'s communication shall have early insertion. Our arrangements would not admit of its appearing this week._ TYRO. _The anonymous_ Life of Queen Anne _inquired after_ (Vol. vii., p. 108.) _is a different work to that of Boyer's, and does not contain one-third the quantity of letter-press. The descriptive matter of the_ Metallick History _has been copied from Boyer, although the plates have been re-engraved_. MR. BROWN'S _Letter on_ MR. ARCHER'S _Services to Photography_; G. H. _on Difficulties in the Wax-Paper Process; and_ F. M. L. _on the Albumen Process, are unavoidably postponed until next week_. A. B. _Your suggestions will be attended to in the_ NOTES ON PHOTOGRAPHY. ENQUIRER (Edinburgh). _If you follow the instructions given in our former Numbers on the Collodion Process, you must meet with success. The deposit in negatives is often much blackened by adding an increased proportion of acetic acid to the pyrogallic solution--say two drachms to the ounce, so that the solution shall be one-fifth of acetic acid. A_ long _exposure often weakens a negative; and, during the recent fall of snow, thirty seconds has produced an effective printing negative, whilst three minutes' exposure has given a negative picture so transparent as to be useless_.