ELEMENTS OF GENERAL SCIENCE 



By OTIS W. CALDWELL, Teachers College, Columbia University, and 

 WILLIAM LEWIS EIKENBERRY, University of Kansas 



xiv -f 308 pages, illustrated, $1.12 



" Elements of General Science " is the first adequate text- 

 book in this new field. The outgrowth of six years' teaching 

 experience with the subject, it is adapted at every point to meet 

 actual present-day classroom needs. 



It is particularly noteworthy for its organization of material. 

 While it offers work in the different sciences, it makes no attempt 

 to present any science as an entity. Instead, it provides a logically 

 arranged and teachable series of topics selected from the pupil's 

 immediate environment and draws upon the facts of any given 

 science as needed. The topics fall readily under five heads : 

 I, The Air; II, Water and its Uses; III, Work and Energy; 

 IV, The Earth's Crust ; V, Life upon the Earth. Each topic 

 leads naturally to the next, so that on the completion of the book 

 the pupil has a logical and well-rounded understanding of the 

 fundamental facts of the natural world. Accurate scientific infor- 

 mation becomes matter of fascinating interest for him through 

 its application to everyday phenomena, such as the weather, plant 

 growth, bacteria, sewage disposal, and similar subjects. 



A LABORATORY MANUAL IN 

 GENERAL SCIENCE 



By OTIS W. CALDWELL, W. L. EIKENBERRY 

 and CHARLES J. PIEPER 



xi + 1 34 pages, with diagrams, 60 cents. In Biflex Binder, 92 cents 



NINETY-FOUR exercises and some supplementary exercises, pro- 

 viding laboratory work to accompany Caldwell and Eikenberry's 

 " General Science." All the exercises are simple, and in many 

 cases two or three can be covered in a single laboratory period. 

 Only those have been included which through trial have proved 

 their value for use in the first year of high school. Common prob- 

 lems and common materials are made the basis of the work. 



151 a 



GINN AND COMPANY PUBLISHERS* 



