Fig. 36. Why doesn't 

 the water spill out? 



neiv junior high school general science text 

 based uon 'what children 'want to know. 



COMMON 

 SCIENCE 



By CARLETON W. WASHBURNE 



THIS is an entirely new kind of book. 

 The foundation on which the book 

 was built is a collection of 2,000 questions. 

 These were classified according to the 

 principles involved. 



The book is written in the language of children, full of in- 

 teresting stories. It makes real use of the child's imagination. 



It contains a wealth of practical information. There are 

 116 fascinating experiments to be performed with simple 

 apparatus. The 88 applications are to everyday problems. 

 Over 600 exercises help the child to thoroughly understand 

 all the principal laws of nature. 



The illustrations show the apparatus in use with children 

 who are performing the experiments. There are 146 very 

 helpful reproductions of photographs and drawings. 



Mimeographed editions of the book have been in successful 

 use in several schools for four years. It has proved itself 

 adaptable to either the individual system of instruction or the 

 usual class method. The book in its present form is the result 

 of its long trial use. It will thus be found successful in use. 



Cloth, xvi +390 pages. (Also MANUAL 



OF INFORMATION. Paper. 24 pages.) 



Price of book $1.68, of Manual 20 cents. 



WORLD BOOK COMPANY 



YONKERS-ON-HUDSON, NEW YORK 



2126 PRAIRIE AVENUE, CHICAGO 



