ACKNOWLEDGMENTS 



It would be impossible to write a series of science text- 

 books for the Junior High School without mentioning the 

 many pioneers in curriculum making such as Barber, 

 Briggs, Carpenter, Charters, Cureton, Cox, Curtis, Frank, 

 Harap, Pieper, Powers, and many others, including the 

 committee who were responsible for the curriculum find- 

 ings in the Twenty-sixth and the Thirty-first Yearbooks 

 of the National Society for the Study of Education. The 

 establishment of courses in science at this age level is still 

 in the experimental stage. But successful courses must 

 be based on the findings of interest studies as well as suc- 

 cessful practice of teachers who are practical and pragmatic 

 in their philosophy of teaching. 



The writers of this text have frankly belonged to this 

 latter school, and the pages which follow are the results of 

 practical work in the classroom, together with the accept- 

 ance of such findings in experimental teaching as best 

 illustrate these objectives. It would be impossible to name 

 all the teachers who have given help and inspiration to 

 the writers, but the mention of the following must be 

 made because of the personal contacts involved : Dr. 

 Edna Bailey and Dr. Anita Layton of the University of 

 California ; Dr. Otis T. Caldwell of Columbia University ; 

 Professor W. L. Eikenberry, State Teachers College, Tren- 

 ton, New Jersey ; Miss Winifred Perry, Roosevelt Junior 

 High School, San Diego, California ; Dr. Frank M. Wheat, 

 Head Department of Biology, George Washington High 

 School, New York City ; and Professor Herbert E. Walter, 

 Department of Zoology, Brown University, Providence, 

 Rhode Island. From each of the above, the writers have 

 had help and inspiration. 



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