THE VENOM OF HELODERMA 



BY 



LEO LOEB 



WITH THE COLLABORATION OF CARL L. ALSBERG, ELIZABETH 



COOKE, ELLEN P. CORSON-WHITE, MOYER S. FLELSHER, 



HENRY FOX, T. S. GITHENS, SAMUEL LEOPOLD, 



M. K. MEYERS, M. E. REHFUSS, D. RIVAS, 



AND LUCIUS TUTTLE 



WASHINGTON, D. C. 



Published by the Carnegie Institution of Washington 



1913 



