186 REVIEWS. 



its attempting so to combine the concrete facts of Zootomy with the outlines of 

 systematic classification as to enable the student to put them for himself into 

 their natural relations of foundation and superstructure. The foundation may 

 be made wider, and the superstructure may have its outline not only filled up, 

 but even considerably altered by subsequent and more extensive labours ; but 

 the nuitual relations of the one as foundation and of the other as superstruc- 

 ture, which this book particularly aims at illustrating, must always remain the 

 same. There are 14 excellently engraved plates. 



The Elements of Botany for Beginners and for Schools. 

 By Asa Gray. 8vo, pp. 226. (New York and Chicago : Ivison, Blakeman, 

 and Co. 1887.) 



This work of the late well-known author is intended to ground beginners 

 in Structural Botany and the principles of Vegetable life, mainly as concerns 

 Flowering or Phanerogamous plants, and to be a companion and interpreter to 

 the Manuals and Floras by which the student threads his way to a clear know- 

 ledge of the surrounding vegetable creation. We have the greatest confidence 

 in recommending this book. The last thirty-four pages are occupied by a 

 valuable glossary. 



A History of Photography, written as a Practical Guide 



and an Introduction to its Latest Developments. By W. Jerome Harrison, 

 F.G.S. ; with an Appendix by Dr. Maddox on the Discovery of the Gelatino- 

 Bromide Process. Svo, pp. 144. (Bradford : Percy Lund and Co. London : 

 Triibner and Co. 1SS8.) 



The volume before us gives, as its title implies, a consecutive account of 

 the principal processes which have been employed in photography during the 

 brief half-century of its practical existence. In its 27 chapters we have an 

 account of the Origin of Photography, Some of its Pioneers, The Daguerreo- 

 type, The Callotype, and Collodion Processes, etc. The work is further illus- 

 trated with 12 photo-mechanical plates, portraits of some of the fathers of 

 photography, Short biographies of some are also given. 



Photo-Engraving, Photo-Etching, and Photo-Lithography, in 

 Line and Half-Tone ; also. Collotype and Heliotype. By W. T. Wilkinson, 

 of London. Revised and enlarged by Edward L. Wilson. American (third) 

 edition. Crown 4to, pp. xvi. — 184. \New York : Edward L. Wilson. 1S88.) 



In this handsomely got-up volume the author has made many additions to 

 his last English edition. Mr. Wilson has added further to the value of the 

 work by " boiling down " and incorporating the best points from current publi- 

 cations in France and Germany. Chapters and parts from the Handbnch der 

 Cheniigraphie titid Pliotochcmigraphie, bj' Mr. J. O. Morch, have also been 

 added, making the work complete up to date. 



The volume is divided into six parts, viz. — Photo-Engraving in Line, in 

 Ilalf-Tone, and on Copper; Photo-Lithography in Line and in Half-Tone; 

 and Collographic Printing. 



Familiar Animals and their 'Wild Kindred. By John Mon- 

 seith, ALA. Crown Svo, pp. 208. (Cincinnati and New York : Van Ant- 

 werp, Bragg, and Co.) 



This is a school reading-book (third-reader grade). It conducts the reader 

 by a natural link of association from the more familiar to the less familiar facts 

 about animals. The publishers have evidently spared no expense in presenting 

 a large number of accurate pictures of the more prominent subjects of the text. 



