REVIEWS. 55 



It is a valuable book, and will doubtless be found of the greatest 

 service to all those who are interested in the study of Lichens. 

 The number of species and varieties described is 1710. The 

 work is preceded by an introduction to the study of Lichens, with 

 their geographical distribution, general and local, and their uses. 

 The glossary and index at the end of the book will be found most 

 useful to the student. Lichenologists will do well to secure a copy 

 of the work, as we understand the stock is limited. 



Manual of the Mosses of North America. By Leo 

 Lesquereux and Thomas P. James ; with six beautifully executed 

 plates illustrating the genera. Pp. v. — 447. {Boston^ U.S.A. : 

 Cassiiio and Co.) 



The manual is believed to include descriptions of all the 

 species of mosses (about 900) that are known to occur on the 

 North-American Continent within the limits of the United States 

 and northwards; to which is added a valuable glossary and index. 

 The six Htho. plates show anatomical dissections of all the genera. 

 The work will form a good addition to the library of every 

 botanist. 



Aids to Botany. By Armand Semple, B.A., M.B., etc. 

 Pages X. — 103. [London : Bailliere^ Tindall, and Cox.) 



Easy Lessons in Botany, according to the requirements of 

 the New Code. By Edward Step ; with 120 illustrations by the 

 author. Third edition; pp. 48. {London: T. Fisher Umvin.) 



Field Botany : a Handbook for the Collector, containing 

 instructions for gathering and preserving plants, and the formation 

 of the Herbarium. By Walter P. Manton. Illustrated; pp.41. 

 {Boston, U.S.A. : Lee and Shepard.) 



Three little books valuable and useful to the students to whom 

 they are addressed. The "Aids to Botany" is a very concise 

 note-book, just such a one as may be read through with profit by 

 the student to refresh his memory on the eve of an examination. 

 The "Easy Lessons" are well adapted for use as an adjunct to 

 class-teaching. The book is well and copiously illustrated, and 

 contains a large amount of information compressed into a small 

 space. 



The " Hand-book of Field Botany " is essentially a collector's 

 hand-book, and furnishes instructions as to Outfit, Collecting, 

 Pressing and Preserving, Herbarium, Leaf-Photography, Printing 

 Plants, Floral Designs, and Skeleton Leaves. The aim of this 



