Having from time to time distributed among my friends extra copies of 

 my concbological papers, I here offer a title-page and table of contents for 

 tbe series, wbicb may be bound as Vol. I. 



I add a complete list of all the other papers and works which I have pub- 

 lished prior to 1874. 



W. G. B. 



Burlington, N. J., May, 1874. 



COLLINS, PRINTER. 



