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THE POPULAR SCIENCE MONTHLY. 



have been made to it, along with matter 

 that has become obsolete, some subjects 

 appertaining to domestic hygiene have been 

 omitted, or rather transferred to a supple- 

 mentary work. After the definitions and 

 the historical introduction, the subject is 

 considered under the general headings of 

 "Food"; "Air, its Impurities, and their 

 Effects on Public Health"; "Ventilation 

 and Warming " ; " Water " ; " Water Analy- 

 sis"; "Impure Water, and its Effects on 

 Public Health"; "Dwellings"; "Hospi- 

 tals " ; " Removal of Sewage " ; " Purifica- 

 tion and Utilization of Sewage " ; " Soils 

 and Localities — their Influence on Public 

 Health " ; " Infectious Diseases — their Mode 

 of Propagation and Prevention " ; " Disin- 

 fectants and Disinfection " ; " Vital Statis- 

 tics"; and the "Duties of Medical Officers 

 of Health." In addition to what was con- 

 tained in former editions, there have been 

 given in the section on the examination of 

 food, brief descriptions of diseases which 

 render the flesh of animals unfit to be 

 eaten ; new matter on water analysis and 

 the analysis of sewage and effluents ; the 

 chapter on soils and localities and their 

 influence on health is new ; the chapter on 

 infectious diseases has been remodeled ; 

 and subjects relating to disinfection are 

 treated more fully. 



The Student's Hand-Book of Historical 

 Geology. By A. J. Jck.es- Browne. 

 London: George Bell and Sons; New 

 York: Scribner & Welford. Pp. 597. 

 Dr. Jukes-Browne, having already pub- 

 lished a volume on physical and structural 

 geology, the present treatise, on paleonto 

 logical and historical geology, is given to 

 complete the student's curriculum. It pre- 

 eminently concerns British geology, and is 

 intended to present the history of the rocks 

 of the British Islands, while Continental ge- 

 ology is drawn upon, in a supplementary 

 way, only so much as is necessary to fill up 

 the gaps in the British records and com- 

 plete the outline of the history. Promi- 

 nence has been given to such stratigraphi- 

 es! facts as throw light on the physical and 

 geographical conditions under which each 

 group or system of rocks has been accu- 

 mulated ; but in this department, where so 

 much room is left for the imagination to 

 work and there is so much temptation to 



give it freedom, the author has endeavored 

 to confine himself to such inferences as 

 might reasonably be deduced from a study 

 of the facts. Illustrations are given repre- 

 senting typical fossils and sections of coun- 

 try, aud they are clearly engraved. 



The Buchholz Family. By Julius Stinde. 

 Translated by Dora Schmitz. New 

 York : Charles Scribner's Sons. Pp. 

 262. 



This series of " Sketches of Berlin Life " 

 is one of the most popular and one of the 

 most amusing books ever published in Ger- 

 many; a fact which is partly indicated by 

 the mention in the title-page that the trans- 

 lation is made from the forty-ninth edition 

 of the German original, while the story 

 is only two years old. The heroine, Frau 

 Buchholz, tells her own story of the troub- 

 les she got into by her intermeddling and 

 jealousy, revealing in every incident how 

 that she is the blunderer and to blame for 

 all that is disagreeable, yet always totally 

 unconscious that her conduct has not been 

 marked by strict propriety and perfect tact. 

 As a picture of German middle-class vanity 

 and the weaknesses that attend it, the story 

 has rarely been excelled ; yet it is all told in 

 perfect good-humor, with the most evident 

 fidelity to nature, without exaggeration or 

 malice. The translation is usually done 

 with grace and spiiit. 



A Manual of Lithology. By Edward H 

 Williams, Jr. New York : John Wiley 

 and Sons. Pp. 135. Price, $1.25. 



Tiie author is Professor of Mining En- 

 gineering and Geology in Lehigh Univer- 

 sity. In the classes, after thorough ground- 

 ing in crystallography and mineralogy, the 

 student begins the study of rock-formation. 

 The theory and definitions are first acquired, 

 and afterward a practical knowledge of the 

 rocks is obtained by the examination of 

 specimens. The object being to enable the 

 student to classify at sight the more com- 

 mon species, only the macroscopic peculiari- 

 ties are given. Mr. Williams has sought in 

 this manual to combine a thorough knowl- 

 edge of the elementary portion of the sub- 

 ject, with a brief account of the principal 

 rocks, and a ready method for their deter- 

 mination. 



