550 Scientific Intelligence. 



standing of the organs involved, and (II) the hygiene of the 

 human mechanism and the sanitation of its surroundings. The 

 aims of the authors, as stated on p. 303, is to persuade every one 

 who reads the book, not merely to study and know himself as a 

 physical mechanism with the thoroughness with which he would 

 study a valuable watch or an automobile, but to use that mech- 

 anism scientifically to the end that life may be longer, more use- 

 ful, and more enjoyable. With this object in view, the second 

 part of the book is devoted to personal hygiene, domestic hygiene 

 and sanitation. The home is considered with respect to its sup- 

 ply of light, heat, air and water, and the removal of wastes, 

 while the six concluding chapters on the public health and sani- 

 tation discuss public supplies of food, water, and gas, public 

 sewerage, infectious and contagious diseases, vaccination and 

 serums, public conveyances and public buildings, and the health 

 of nations. 



The book deserves much praise both for the attractive style 

 in which the subject is presented and for the excellence of the 

 many original illustrations. It will undoubtedly be of great ser- 

 vice wherever it is used in encouraging the " establishment and 

 maintenance of the highest possible working efficiency of the 

 human mechanism." w. e. c. 



3. The Voyages and Explorations of Samuel de Champlain 

 (160 Jf- 16 16), narrated by himself. Translated by Annie 

 Nettleton Bourne. Together with the Voyage of 1603 re- 

 printed from Purchas His Pilgrimes. Edited with introduction 

 and notes by Edward Gaylord Bourne. In two volumes ; vol. 

 I, pp. xl, 254 ; vol. II, pp. 229. New York, 1906 (A. S. Barnes 

 Company). — The voyages of Champlain were alike remarkable 

 for the bravery and energy with which they were carried through, 

 and for the importance of the geographical results attained. This 

 excellent translation, which for the first time makes Champlain's 

 most interesting writings readily accessible in English form, 

 should find many readers not only among students of history but 

 also among all those interested in the land which he did so much 

 to make known. The introduction by Professor Bourne, with its 

 able estimate of Champlain's character and work, adds largely to 

 the value of the work. These two volumes form volumes six- 

 teen and seventeen of " The Trail Makers Series " of early Ameri- 

 can expeditions, voyages and discoveries. 



4. JJ. S. Department of Agriculture. Field Operations of 

 the Bureau of Soils, 190 J^. (Sixth Report) ; by Milton Whitney, 

 Chief, with Accompanying Papers by Assistants in charge of 

 field parties. Pp. 1159, with one plate, 45 figures ; also 53 maps 

 in separate cover. Washington, 1905. 



