NOTES AND QUERIES. 



[No. 274. 



XYLO- IODIDE OF SILVER, exclusively used at all the Pho- 

 tographic Establishments. — The superiority of this preparation is now universally ac- 

 knowledged. Testimonials from the best Photographers and principal scientific men of the day, 

 warrant the assertion, that hitherto no preparation has been discovered which produces 

 uniformly such perfect pictures, combined with the greatest rapidity of action. In all cases 

 where a quantity is required, the two solutions may be had at Wholesale price in separate 

 Bottles, in which state it may be kept for years, and Exported to any Climate. Full instructions 

 for use. 



Cadtion.— Each Bottle is Stamped with a Red Label bearing my name, RICHARD W. 

 THOMAS, Chemist, 10. Pall Mall, to counterfeit which is felony. 



CYANOGEN SOAP: for removing all kinds of Photographic Stains. 



The Genuine is made only by the Inventor, and is secured with a Red Label bearins this Signature 

 and Address, RICHARD W. THOMAS, CHEMIST, 10. PALL MALL, Manufacturer of Pure 

 Photographic Chemicals : and may be procured of all respectable Chemists, in Pots at Is., 2s., 

 and 3s. 6(1. each, through MESSRS. EDWARDS, 67. St. Paul's Churchyard; and MESSRS. 

 BARCLAY & CO., 95. Farringdon Street, Wholesale Agents. 



Just published. Second Edition. Price 1«., by 

 Post Is. 6d. 



THE COLLODION PROCESS. 

 By T. H. HENNAH. 



Also, 

 Price Is., by Post Is. 6d. 



THE WAXED-PAPER PRO- 

 CESS of GUSTAVE LE GRAY (Translated 

 from the French). To this has beeu added a 

 New Modiftca ion of the Process, by which the 

 Time of Exposure in the Camera is reduced to 

 one-fourth, by JA M ES HOW, Assistant in 

 the Philosoplucal Establishment of the Pub- 

 lishers. 



GEORGE KNIGHT & SONS, Foster Lane, 

 London. 



T 



HE PHOTOGRAPHIC ART. 



JL - MESSRS. KNIGHT & SONS respect- 

 fully inform Artists. Amateurs, and the Pro- 

 fession, that t' ey are the Sole Agents for 

 VOIGHTLANDER & SON'S Photographic 

 Lenses for Portraits and Views. The different 

 sizes can be seen at their Establishment, where 

 they have every convenience for testing their 

 powers. The Photographic Department of 

 their Establishment comprises every useful 

 improvement in this interesting Art. 



GEORGE KNIGHT & SONS, Foster Lane, 

 London. 



PURE CHEMICAL PREPAR- 

 ATIONS requisite in the various Pro- 

 cesses of the Photographic Art, manufactured 

 and sold by GEOKGE KNIGHT & SONS, 

 who having considerably reduced the price of 

 many of their preparations, will have plea- 

 sure in forwarding their new List on appli- 

 cation. 



GEORGE KNIGHT & SONS, Foster Lane, 

 London. 



PHOTOGRAPHY. — HORNE 

 & CO.'S Iodized Collodion, for obtaining 

 Instantaneous Views, and Portraits in from 

 three to thirty seconds, according to light. 



Portraits obtained by the above, for delicacy 

 of detail, rival the choicest Daguerreotypes, 

 specimens of which may be seen at their Esta- 

 blishment. 



Also every description of Apparatus, Che- 

 micals, &c. inc. used in this beautiful Art— 

 123. and 121. Newgate Street. 



PHOTOGRAPHIC DELTNE- 

 ATI 'NS OF THE SCENERY, AR- 

 CHITECTURE, AND ANTIQUITIES OF 

 GREAT BRITAIN AND IRELAND. By 

 RUSSELL SEDGHELD. Part IV. Price 

 2U. 



London : SAMUEL HIGHLEY, 

 32. Fleet Street. 



TX7H0LESALE PHOTOGRA- 



TT FHIC AND OPTICAL WARE- 

 HOUSE. 



J. SOLOMON', 22. Red Lion Square, London. 

 Depot for the Pocket Water Filter. 



Just published. 



PRACTICAL PHOTOGRA- 

 PHY on GLASS and PAPER, a Manual 

 containing simple directions fur the production 

 of PORTRAITS and VIEWS by the agency 

 of Light, including the COLLODION, AL- 

 BUMEN, WAXED PAPER and POSITIVE 

 PAPER Processes, by CHARLES A. LONG. 

 Price Is.; per Post, Is. 6rf. 

 Published by BLAND & LONG, Opticians, 

 Pliilosophical and Photographical Instru- 

 ment Makers, and Operative Chemists, 153. 

 Fleet Street, London. 



nO-LLODION PORTRAITS 



\J AND VIEWS obtained with the greatest 

 ease and certainty by using BLAND & 

 LONG'S preparation of Soluble Cotton ; cer- 

 tainty and uniformity of action over a length- 

 ened period, combined with the most faithful 

 rendering of the half-tones, constitute this a 

 most valuable agent in the hands of the pho- 

 tographer. 



Albumenized paper, for printing from glass 

 or paper negatives, giving a minuteness of de- 

 tail unattained by any other method, 5s. per 

 Quire. 



Waxed and Iodized Papers of tried quality. 



Instruction in the Processes. 



BLAND & LONG, Opticians and Photogra- 

 phical Instrument Makers, and Operative 

 Chemists, 153. Fleet Street, London. 



The Pneumatic Plate-holder for Collodion 

 Plates. 



«»« Catalogues sent on application. 



THE SIGHT preserved by the 

 XTse of SPECTACLES adapted to suit 

 every variety of Vision by means of SMEE'S 

 OPTOMETER, which effectually prevents 

 Injury to the Eyes from the Selection of Im- 

 proper Glasses, and is extensively employed by 



BLAND & LONG, Opticians, 153. Fleet 

 Street. London. 



PHOTOGRAPHIC CAMERAS. 



OTTEWILL AND MORGAN'S 



Manufactory, 24. & 25. Charlotte Terrace, 

 Caledonian Road, Islington. 



OTTE WILL'S Registered Double Body 

 Folding Camera, adapted for Landscapes or 

 Portraits, may be had of A. ROSS, Feather- 

 stone Buildings, Holbom ; the Photographic 

 Institution, Bond Street ; and at the Manu- 

 factory as above, where every description of 

 Cameras, Slides, and Tripods may be had. The 

 Trade supplied. 



Second Edition, with large map, price 5«., 

 I cloth boards. 



PRIZE ESSAY ON PORTU- 

 GAL. By JOSEPH JAMES FOR- 

 I RESTER. of Oporto, F.R.G.S. of London, 

 Paris, Berlin. &c.. Author of " Original Sur- 

 ; vevs of the Port Wine Districts ; " of the 

 " River Douro from the Ocean to the Span'sh 

 Frontier;" and of the "Geology of the Bed 

 and Banks of the Douro ; " also of a project for 

 tlie improvement of the navigation of that 

 river, and of various other works on Portugal. 

 JOHN WEALE, 59. High Holbom. 



HANDEL AND MOZART.— 

 MESSIAH, with MOZART'S AC- 

 COMPANIMENTS und an Appendix of 57 

 pages), arranged by John Bishop, 257 pages, 

 6s. Kd, — This is the only edition containing 

 Mozart's additions incorporated with the ac- 

 companiments to the vocal score ; book of 

 words prefixed. Also, by the same, " Alexan- 

 der's Feast," from Mozart's score, 3s. — Order 

 ROBERT COCKS & CO.'S Standard Octavo 

 Edition. 



nrO THE HEADS of SCHOOLS, 



X ETC. _ HAMILTON'S MODERN IN- 

 STRUCTIONS FOR THE PIANOFORTE, 

 rind edition, price 4s. "The most complete 

 instruction book extant." 



London : ROBERT COCKS & CO. 



17LUTE MUSIC. — The nu- 



jO merous Applicants for ROBERT COCKS 

 & CO.'S CATALOGUE OF FLUTE MUSIC 

 (which has lately undergone complete revision 

 and considerable augmentation), are informed 

 that the new edition (the third) is now ready, 

 and may be had Gratis and Postage Free. 



London : ROBERT COCKS & CO. 



MUSICAL INSTRUMENTS 

 FOR PRESENTATION OR FOR 

 HIRE, including a splendid Gothic double- 

 action Harp, by Erard, quite new ; a fine 

 double-action Harp, by Stumpff, quite new ; 

 several fine Harmoniums, by Alexandre. A 

 large assortment on view of ROBERT COCKS 

 & CO.'S unrivalled Piccolo and Cottage Piano- 

 fortes, Violins, (200 in number), including 

 those by Vuillaume ; Tenors, Violoncellos, 

 Contra- basses. Flutes, Cornopeans, several fine 

 Concertinas, with a large stock of Violin 

 Bows, Strings, &c., a variety of Metronomes, 

 and all articles of utility to the Performer and 

 Amateur. Price Lists and Catalogues Gratis 

 and Postage Free. 



London : ROBERT COCKS & CO., New Bur- 

 lington Street, Publishers to the Queen. 



PIANOFORTES, 25 Guineas 

 each. — D'ALMAINE & CO., 20. Soho 

 Square (established a.d. 178.5), sole manufac- 

 turers of the ROYAL PIANOFORTES, at 2& 

 Guineas each. Every instrument warranted. 

 The peculiar advantages of these j)ianoforte9 

 are best described in the following professional 

 testimonial, signed by the majority of the lead- 

 ing musicians of the age : — " We, the under- 

 signed members of the musical profession, 

 having carefully examined the Royal Piano- 

 fortes manufactured by MESSRS. D'AL- 

 MAINE & CtJ., have great pleasure in bearing 

 testimony to their merits and capabilities. It 

 appears to us impossible to produce instruments 

 of the same size possessing a richer and finer 

 tone, more elastic touch, or more equal tem- 

 perament, while the elegance of their construc- 

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 the library, rtoudoir.or drawing-room. (Signed> 

 J. L. Abel, F. Benedict, H. B. Bishop, J. Hlew- 

 itt, J. Brizzi, T. P. Chipp, P. Delavanti, C. H. 

 Dolby, E. F. Fitzwilliam, W. Forde, Stephen 

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 J. L. Hatton, Catherine Hayes, W. H. Holmes, 

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 Alexander Lee, A. I.effler. E. J. Ix)der, W. H. 

 Montgomery, S.Nelson, O.A.Osborne, John 

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 E. F. Rimbault, Frank Romer, G. H. Rodwell, 

 E. Rockel, Siras Reeves, J. Templeton, F. We- 

 ber, H. Westrop, T. H. Wright,^' &c. 



D'ALMAINE & CO., 20. Soho Square. Lists 

 and Desiorns Gratis. 



FREE TRADE IN BOOKS.— 

 4. COPTHAIiL BUILDINGS, Moor- 

 gate Street. _ S. & T. GILBERT beg respect- 

 fully to inform the Public, that they supply all 

 Books, Magazines, Reviews, Periodicals, Al- 

 miinucs. Pocket-books, and Diaries, published 

 at Is. and upwards, at a reduction of 2rf. in the 

 Shilling, for Cosh. Country Orders executed 

 en the same terms, and delivered on the fol- 

 lowing morning, at a charge for Postage of dd. 

 for each pound, or fraction of a pound weight. 

 School and Export Orders promptly attended 

 to. Please note the Address : 



S. s T. GILBERT, Booksellers, 

 4. Copthall Buildings, Moorgate Street. 



