:i666 JOURNAL OF THE ROYAL HORTICULTURAL SOCIETY. 



■ "A Lecture on Mendelism." By H. Drinkwater,. M.P. 8vo., 

 ' 31 pp. (Dent, London, 1910.) 2s. 6cZ.net. -.^ . 



This lecture was delivered at Leicester, and gives a simple outline 

 of some of the phenomena of heredity comprised under the title 

 "Mendelism." It does not pretend to, add any new matter, nor to 

 throw any new light upon old facts, nor indeed to present old facts 

 in .any new marnner. 



" Heredity in the Light of Recent Research." By L. Doncaster, 



■ M.A. 8vo., X +• 140 pp. (University Press, Cambridge, 1910.) 

 Is.' net. ^ / 



This little book, one of the * ' Cambridge Manuals of Science, ' ' 



while it adds nothing new to our knowledge of heredity, .gives a plain 

 and straightforward account of the present/ state of our knowledge in 



''a readable form aiid at a price that renders it accessible to everyone. 

 Such subjects as the " Cause of Variation/' " Statistical Study of 

 Variation, " " Mendeliah Heredity, ' * * Some Disputed . Questions, ' ' 

 "Heredity in Man," are dealt with, and dealt with so as to give a 

 clear" conception of their importance. V\^e can commend the book to 



. any who desire a short and reliable summary of the present state of our 

 knowledge of the principles of heredity. 



"Daffodils." By Rev. Joseph Jacob. 8vo., 115 pp. (Jack, 

 London, 1910.) Is. 6d. net. 



There is a mass of information in this work of Mr. Jacob's that will 

 prove interesting and instructive to the daffodil lover, and even expert 



.growers may glean a fund of serviceable knowledge from this well- , 

 printed and beautifully illustrated book. It is divided into sixteen | 



^:chapters, under the following heads, viz. : " The Daffodil in Books," 

 "History," "Botany and Physiology," "Cultivation," "Changing 

 Bulbs from one Garden to another," " Propagation," " Raising New 

 Varieties by Cross-breeding," "Enemies, Diseases, and Poisons," 

 "Classification," " R.H.S. Classifications," "Varieties Illustrated," 

 "Lists for Different Purposes," "Daffodils Exhibited on March 8 ' 

 and 9, 1910," "Daffodil Shows," "Calendar of Operations," d'c. 

 The author has included practically all one could reasonably want to . 

 know. Some may not agree with the classifications; but, owing to | 

 hybridizing having been so great of late years, it is probably as good ^ 

 as could be compiled. An excellent Preface has been written by the i 

 Rev. W. Wilks, M.A., an old and enthusiastic grower of daffodils. I 



' Mr. Wilks believes that the present high prices of daffodils will not \ 

 continue, and that better varieties than are now in commerce are j 

 not wanted. Some of the new varieties raised of late years are of poor j 

 constitution, as though hybridizing were being overdone. 



" Root and Stem Vegetables." By Alexander Dean. 8vo., 

 114 pp. (Jack, London, 1910.) Is. 6d. net. 



; From such a well-known authority as Mr. A. Dean we expect some- 

 thing good, and in this book our expectations are reahzed to the full, 



