"That the volume is widely known and appreciated is shown by the fact of its having reached a third edition, and we can only say that it well deserves its success. A photographer of the author's well-known skill and repute could not fail to instruct others in his art. For practical instruction in the art this book distances all competitors."—Nature.

"We are pleased to see that Capt. Abney's book of 'Instructions' has been so well appreciated as to necessitate the issuing of a third edition. This edition is in several respects an improvement upon the former two, and is, besides, illustrated by a Woodburytype of the author's picture in Windsor Forest. There is in these pages much useful matter connected with several of the processes, wet and dry, in common use; and we are pleased to find that a prominent place is given to the Washed Collodion and Gelatine Emulsion processes. The chapter on 'Defects in Negatives-their Causes and Remedies,' is very practical and valuable, and will be found exceedingly acceptable to many inexperienced readers. There are numerous hints and dodges' to be found in this manual, which has our best wishes for its success."—British Journal of Photography, Dec. 22, 1876.

"The book before us, we have no hesitation in saying, is the most complete manual on Photography that we have seen. Capt. Abney is a thorough master of his subject, both in its widest theories and its minutest details. He never shirks any of the numerous difficulties which beset the science, but meets them fairly, and does his best to solve them The work is preeminently scientific. It is not one of the high-flown theoretical handbooks of which we see so many, but a rainstaking manual, entering into the smallest and minutest particulars in describing the various systems. Capt. Abney's discussions of the 'Emulsion Process' are remarkable for the masterly style in which they are conducted, and for the clearness with which the particulars are set forth. In conclusion, we can only state that the manual is a most valuable contribution to the science of photography, and doubtless, from the well-known merits of Capt. Abney, will have great success."-Derbyshire Advertiser, December 15, 1876.

"An excellent little handbook to the processes of photography, which is in its third edition, and deals mainly with the practical part of the art."-English Mechanic, December 15.

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ently is not able to stain with Chemicals or Damp, and has also the advantage of being scarcely HALF ATE. Orown Glass is rapidly growing out of use, and Messrs. F. & Co. have anticipated this difficulty and are happy to find Photographers appreciate their efforts.

is especially prepared for the Collodion, and is distinguished by a diamond mark on one corner of each square.

EST & SON, 58 & 60, LIME STREET, LIVERPOOL.

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CONCISE INSTRUCTION IN THE ART OF RETOUCHING.

Illustrated with Anatomical Drawings and TWO CARBON NEGATIVES
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Produced upon Pellicle, which may be detached from the Book and Printed from as Examples.
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"Brixham, Devon, September 28, 1877.

"DEAR SIR,-Your book came safely to hand, and in reading it I was surprised to find, in these days of sham and monopoly, so much honest and straight-
forward teaching. Being disappointed elsewhere, I thought it just possible to gather a few practical hints from your publication. Surely the thanks of all are
due to you for producing such a much needed book. I am only afraid your work contains so much information that a perusal of its pages will have a damaging
W. HADDY,”
effect on your practice as a teacher of the art-I mean so far as regards personal lessons. Order for retouching materials enclosed.-Yours, &c.,
See also PHOTOGRAPHIC News, Nov. 10, 1876 and BRITISH JOURNAL OF PHOTOGRAPHY, Nov. 3, 1876.

11,

P.

F. T. BURROWS,

MILTON STREET, DORSET SQUARE,

LONDON.

MEAGHER, Photographic Apparatus Manufacturer.

Prize Medals awarded at London, Edinburgh, Berlin, and Paris.
MEAGHER'S NEW FOLDING CAMERA.

THIS CAMERA is similar in construction to the already well-known Binocular Camera, and possesses the following advantages over the existing Landscape or

Kinnear form of Camera :—No screws are required for fixing; the focussing is effected from the back by the Screw Adjustment; the Focussing-screen is attached
o the Camera, and the Bellows-body is PARALLEL. This will be found of great advantage when using Wide-angle Lenses. It is available either for the studio or
field, the range of focus permitting the use of the shortest-focus Stereo Lenses, or any of the Wide-angle, Doublet, or View Lenses, also for the C.D.V. or Cabinet Lenses
"The Cameras of Meagher deserve especial examination, as well for the perfection of their workmanship as for their perfect adaptation to the purposes fo
which they are designed."-Vide Report of Jurors, Class IX., International Exhibition, Paris, 1867, Illustrated London News, September 14, 1867, page 298.
Price for Pictures 8×6, £5 168. | 8×8, £6 10s. | 10x8, £6 16s. | 10×10, £7 10s. | 12×10, £8 | 12×12, £8 15s.

owing Back, from 15s. extra

MEAGHER'S NEW BINOCULAR CAMERA.

Photographic Society of Scotland-SILVER MEDAL. | Dublin International Exhibition-HIGHEST AWard.
Focussing from 8 to 10 inches, can be used for Stereoscopic Views, Cartes-de-Visite, or for Single Pictures on the full size plate (i. e.. 7 by 5), with swing-back į
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Price, with Swing-back, one Single Back, two loose Inner Frames, and two Frents, £4 18s.

LENSES BY ROSS, DALLMEYER, GRUBB, STEINHEIL, and VOIGTLANDER at their Catalogue Prices.
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NITRATE OF SILVER.

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Forwarded free, in 10 oz. Packets, at 3/1 per oz., on receipt of P.O. Order.

CHLORIDE OF GOLD, in Bottles of various sizes, at lowest prices.

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REFINERS, ASSAYERS, & METALLURGICAL CHEMISTS.

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find it gives

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PLANOGRAPHIC LENSES, both rapid and wide-angle, for Groups, Architecture, Landscape, Stereo, and Copying.
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SENSITIZED AND NON-SENSITIZED PAPERS.

DURAND'S SENSITIZED PAPER prints much more rapidly than ordinary Albumenized Paper, and the proofs are finer and more brilliant. It will keep two months, requires no fuming, will remain uninjured for weeks between printing and toning, and is a great saving in every way. It has been largely used by the most eminent photographers, including Mr. T. R. Williams, Messrs. Hills and Saunders, Mr. R. Faulkner, Mr. O. G. Rejlander, of London; Mr. Jno. Eastham, of Manchester; Mr. Downey, of Newcastle; Mr. T. Edge, of Preston; Mr. E. Gregson, of Blackpool; Mr Burgess, of Norwich, &c., &c.

Extract from Photo. News, June 14th, 18*2. Page 287.-"Some examples with which Dr. Diamond has just favoured us are singularly fine, having al the brilliancy of the class of pictures now generally distinguished as Salomonesque. The tone is perfect. Dr. Diamond says :- My dear Simpson, this is the effect I now always get with Durand's paper. Something tells me that pictures like these are permanent.'"' M. DURAND has hundreds of testimonials to the same Purpose.

Post free, per Sheet, 1/-; Quarter Quire 5/- Half Quire, 8/3 stamps, or 8/- P.0.0.; Quire, 15/6 stamp3, or 15/- P.0.0 PRFPAID TO C. DURAND, 3, THE GROVE, NEW WIMBLEDON, LONDON, S.W.

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PRIOR

4

RICES per Gross-4 × 31, 10/- 5 × 4, 14/9; 6 × 42, 24/-; 7 × 4, 25/9; 8} × 6, 43/-; 10 × 8, 9 d. ft.; 12 × 9, 10‡d. Not above 1 foot per square, ìld. per ft.; 1 foot, 1/- per ft. Usual terms to the Trade. It is superior to Patent Plate, because it is non-absorbent, and consequently is not able to stain with Chemicals or Damp, and has also the advantage of being scarcely HALF THE PRICE OF PATENT PLATE, Crown Glass is rapidly growing out of use, and Messrs. F. & Co. have anticipated this difficulty at great expense to themselves, and are happy to find Photographers appreciate their efforts.

N.B.-One side of our Glass is especially prepared for the Collodion, and is distinguished by a diamond mark on one corner of each square, J. A. FORREST & SON, 58 & 60, LIME STREET, LIVERPOOL. NON-ACTINIO PHOTO. GLASS, for Operating Rooms, tested by Spectrum Analysis. OPERA GLASS, smoothed a flashed to order.