306 REVIEWS 



many subjects. In a future edition we would suggest that these be arranged in 

 dictionary order, thus saving the trouble of constantly referring to the Index, 

 which is found at the end of the book. 



Photo-Aquatint ; or, The Gum-Bichromate Process, with 

 Illustrations ; A Practical Treatise on a New Process of Printing in Pigment, 

 especially suitable for pictorial workers. By Alfred Maskell and Robert 

 Demarchy. Cr. 8vo, pp. 55. (London: Hazell, Watson, & Viney. 1897). i/- 



No. 13 of the Amateur Photographer' s Library describes the process of 

 Photo-Aquatint which is simple of achievement, whilst the results are very 

 artistic, and have found much favour amongst advanced photographers in Paris 

 and other Continental cities as well as in London. Full working instructions 

 of the process are given in this book, which will most probably exercise an 

 important influence upon the future of Pictorial Photography. 



The Year-Book of Photography and Amateur's Guide. 

 Edited by E. J. Wall, F.R.P.S. (London: The Photographic Neivs Office. 

 1897.) Price i/- 



A bulky volume of 642 pages, of which the Year- Book proper occupies 

 some 450. It contains a large amount of valuable information on every subject 

 interesting to the photographer, whether professional or amateur. It is divided 

 into sections. Section i being devoted to Progress and Practice ; Section 2, 

 Facts and Formulce ; Section 3, The Photographer's Gazetteer, a Tourist's 

 Companion and Holiday Guide, compiled by the editor, and giving information 

 of all the places, arranged in alphabetical order, which are likely to be of 

 interest to the photographer ; Section 4, Winter Work ; and Section 5, Novel- 

 ties of the Year. This is a good shilling's worth. 



Bright and Son's ABC Descriptive Priced Catalogue 



of the World's Postage Stamps. Second edition. Cr. 8vo, pp. xiii. — 543 and 

 pp. iv. — 219. (Bournemouth : Bright and Son. London : Simpkin, Marshall, 

 and Co. 1897.) Price 2/6. 



The second edition of this useful catalogue is a great improvement on the 

 first. It is divided into two parts — Part I., Adhesives; Part II., Entires — and 

 is thoroughly revised up to date of going to press. The illustrations — which, 

 we believe, are known as process blocks — are decidedly better than those of 

 the first edition, l)ut we think there is yet room for improvement. There is a 

 useful Foreign Money-Table in the beginning of the book. 



The Naturalist's Directory, 1897. Crown 8vo, pp. 102. 

 (London: L. Upcott Gill.) Price i/- 



A useful little book, giving the names and addresses of British and Foreign 

 Naturalists. These are classified under the heads of Zoology, Microscopy, 

 Botany, Geology, and Palaeontology ; a Naturalist's Trade Directory ; List of 

 Societies, Field Clubs, and Museums ; Natural Science Magazines ; and a List 

 of the principal Works on Natural History published during the year 1896. 



Science Progress : A Quarterly Review of Current Scientific 

 Investigation. (London: The Scientific Press.) Price 3/-, or 10/6 the year 

 post free. 



The April part contains the following papers : — On the Physiology of 

 Reproduction in Plants, by H. Marshall Ward, D.Sc. , F. R.S. ; Condensation 

 and Critical Phenomena (Part 2), by J. P. Kuenen, Ph.D. ; A Remarkable 

 Anticipation of Modern Views on Evolution, by E. B. Poulton, M.A. , F. E. S. ; 

 The Diseases of the Sugar Cane, by C. A. Barber, M.A. ; Wind Scorpions — 



