// I ^. 



AMEEICAN SPIDEES 



THEIR SPINNINGWORK. 



-e- 



A NATURAL HISTORY 



OF THE 



ORBWEAVING SPIDERS OF THE UNITED STATES 



WITH SPECIAL REGARD TO THEIR INDUSTRY AND HABITS. 



ffi 



HEI^RY 0. McCOOK, D. D., 



Vice-President of the Academy of Natural Sciences op Philadelphia; 



vicb-pr esi dent of the american entomological society ; 



Author of "The Agricultural Ants of Texas," 



" The Honey and Occident Ants," 



etc., etc. 



VOL. I. 



PUBLISHED BY THE AUTHOR, 



Academy of Natural Sciences ok Philadelphia. 



A. D. 1889. 



