A BIOCHEMIC BASIS FOR THE STUDY OF PROBLEMS OF TAXONOMY, HEREDITY, 



EVOLUTION, ETC., WITH ESPECIAL REFERENCE TO THE STARCHES AND 



TISSUES OF PARENT-STOCKS AND HYBRID-STOCKS AND THE STARCHES 



AND HEMOGLOBINS OF VARIETIES, SPECIES, AND GENERA. 



BY 



EDWARD TYSON gEICHERT, M.D., Sc.D. 



Professor of Physiology in the University of Pennsylvania 

 Research Associate of the Carnegie Institution of Washington 



IN TWO PARTS 



PART I 



WASHINGTON. D. C. 



Published by the Caenegie Institution of Washington 



1919 'f 



