ia.qo, University of COLORADO 



' ''<A \ MUSEUM / 



V > ^ BOULDER. COLORADO 



AMEEICAN SPIDEES 



THEIR SPINNINGWORK. 



A NATURAL HISTORY 



(IF TIIK 



ORBWEAVING SPIDERS OF THE UNITED STATES 



WITH SPECIAL REliARD TO TIIEIK INDUSTRY AND HABITS. 



BY 



HENRY C. McCOOK, D. D., 



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

 Vue-President of the American Entomological .Socil-rTY ; 

 . Author of "The Agricultural Ants of Texas," 

 " The Honey 'and Oc-cident Ants," 



ETC., ETC. 



VOL. II. 



PUBLISHED BY THE AUTHOR, 



Academy of Natural Siiences of Philadelphia. 



A. D. 1890. 



