MEET THE AUTHORS 445 



Ward, henshaw 

 Author of several popular science books. 



Westgate, dr. lewis g. 

 Emeritus Professor of Geology, Ohio Wesleyan University. Dr. Westgate 

 has his Ph.D. from Harvard and was once associated with the United States 

 Geological Survey. He has done research on the Devonian flora and fauna of 

 Ohio. 



Wilder, dr. russell m. 



Mayo Clinic, Rochester, Minnesota. He has held important positions at Rush 

 Medical College and University of Chicago. His chief medical interests lie in 

 the fields of typhus fever, diabetes, metabolism, and nutrition. 



Young, dr. robert t. 



Scripps Institution of Oceanography, La Jolla, California. Dr. Young has held 

 numerous important positions in the biological field and is interested chiefly 

 in the development of certain parasitic worms, protective coloration, and the 

 biology of fishes. 



