





FOR S 



TWO VALUABLE SCIENTIFIC WORKS. 



A Check List of the Coleoptera of America, North 



Of Mexico: By G. R. CROTCH, M.A., with additions to 

 bring it to date by E. P. AUSTIN. 



This is the only complete list of the North American Coleoptera, and, 

 as such, combining as it does the work of such men as have prepared 

 it, we present it to scientillc men, whom, we feel sure, will repay the 

 expense of publication by their liberal patronage. Price $1.00. 



Mammoth Cave and its Inhabitants: By A. &. PACK- 

 ARD, Jr., and F. W. PUTNAM. A reliable history of this 

 great cave, together with descriptions of the animals there 

 discovered. Price $1.00. 

 Either of the above named works will be sent, postpaid, upon receipt 



of the price. Addr> 



W. A. STEAKNS, 



SALEM, MASS. 



