THE BOOK SHELF 225 



moth, the round-headed and flat-headed borers, the San Jose scale, the gypsy 

 and brown-tail moths, the plum curculio and others. The illustrations are 

 attractive and well chosen. 



Some of the recommendations of control are hardly up-to-date. For 

 example, it is not necessary to add milk-of-lime to arsenate of lead to prevent 

 burning. The great advantage of arsenate of lead is that it contains less than 

 .75 per cent of soluble arsenic and does not burn the foliage of the apple. 



The Next Generation. Frances Gulick Jewett, Ginn & Co. 228 pp., illus- 

 trated. $1. 

 That the destiny of future generations lies in the hands of the men and 

 women, the boys and girls of to-day, that they may lengthen or shorten, bless 

 or curse their lives by what they know and by the way they put their knowl- 

 edge to use is the theme of this little book. It is possible, we read to learn 

 many facts about life itself and about what controls it. Science says "Human 

 beings will be safer when people know the facts and are influenced by them." 

 Teachers say, "Give us the facts and we will pass them on to the boys and 

 girls we teach." The author says in effect, "Here is a book which gives these 

 facts. By subject-matter and manner of presentation this book strongly 

 recommends itself for the desired purpose. The main fact of evolution, how 

 all life is influenced and molded by the three fates, heredity, environment and 

 personal choice or will, is comprehensively and authoritatively stated. Ana- 

 tomy, embryology, geology, geography and the experiments of man in breeding 

 new varieties and species of plants and animals are called upon to give evidence 

 of the fact and manner of evolution. How the life of every organism, be it 

 plant, fish, bird, man, is passed on from one generation to the next by bits of 

 protoplasm called germ cells is clearly told. We are made to see what happens 

 when this stream of life becomes contaminated by alcohol, by nicotine, by 

 disease due primarily to wrong living and spread through carelessness and 

 ignorance. What happens is physical, mental and moral debility, blindness, 

 deformity, idiocy, death. The way of safety from these evils is pointed out. 

 Cleanliness, protection by law, right environment and good parentage are 

 necessary to race improvement. But the greatest of these is good parentage. 

 "The history of the human race proves that right parentage is the noblest 

 gift which one generation may offer to another." The author urges that each 

 generation take the laws of inheritance into account, pass on the best it has 

 received and let its worst inheritance die with itself. This book deals well 

 with a vital subject. Teachers will find here the facts of life for which they 

 have been asking, and they are presented so clearly, logically, simply and 

 interestingly that children may assimilate them with ease. 



X. H. 



The Pruning Manual. L. H. Bailey. MacMillan Co. Price $2.00. 



This is the eighteenth edition of Professor Bailey's well-known book on the 

 practice and principles of pruning fruit trees and vines. This new edition 

 includes also a discussion of the comparatively modern practice of tree-surgery 

 with special reference to the treatment of shade and street-trees. 



