JOURNAL OF THE ROYAL HORTICULTURAL SOCIETY. 



It is a well-illustrated account of the manner in which a plant's 

 physiological needs are met in its structure, and might with advantage 

 be studied by serious students of Botany. The subjects of respiration 

 and assimilation, two diametrically opposite functions continually con- 

 fused with one another by students, are dealt with in a very clear 

 manner and are among the best chapters in an excellent book. 



" Plant Physiology, with Special Eeference to Plant Production." 

 By B. M. Duggar, Ph.D. 8vo., xv + 516 pp. (Macmillan, New 

 York, 1911.) 7s. net. 



This is a text and reference book, and is intended for the general 

 reader as well as for the student who is preparing to grow plants. 



An excellent general account of plant physiology is given, and 

 the special physiology of certain processes connected with plant pro- 

 pagation, &c., are dealt with in their proper places. 



The book is well illustrated and well indexed. 



"The Student's Lyell. " Ed. by J. W. Judd. ^ Ed. 

 8vo., [56] + 645 pp. (Murray, London, 1911.) 7s. 6d. net. 



So well known to students and teachers is the first edition of this 

 book that it is quite unnecessary to do more than express a hearty 

 welcome of this second thoroughly revised edition. 



As the author in the Preface says, the general acceptance of the 

 principles of evolution, "the logical sequel to the 'Principles oi 

 Geology,' " lends a new interest to the writings of Sir Charles Lyell 

 and those whose interest leads them to study the history and structure ' 

 of the earth, and who have not yet made acquaintance with " Th| 

 Student's Lyell," will find in it an inspiring guide. ' 



ilti 



"Pound the Year with Nature." By W. J. Olaxton. Bvo.j 

 xvi + 302 pp. (Eoutledge, London, 1911.) 7s. 6d. net. 



Still another "Nature Knowledge" book, this time written i: 

 fairly simple language for boys and girls, and based upon the sequenc 

 of the months, beginning with September. 



Like most of its kind it is not free from error. Eor instance, i 

 speaks of the turnip sawfiy and the gooseberry sawfly as being one an 

 the same, and of the fall of the leaf being the result ( ?) of th pi 

 approaching winter gales, completely ignoring the question of watt 

 supply and demand. 



It is, however, a book that would interest and stimulate the obser\ 

 mg powers of the young people for whom it is intended, particularl 

 as it contains a number of well- coloured plates. 



" The Agricultural and Forest Products of British West Africa. 

 By Gerald C. Dudgeon. Svo., x + 170 pp., with maps and illustr 

 tions. (John Murray, London, 1911.) 5s. net. » 



This is the first volume of the Imperial Institute Series of hanc 

 books to the commercial products of the tropics. It is edited b 



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