No. 6646 WBNTWOBTH AVENUE, 

 ENGLEWOOD, ILL., December 22, 1888. 



PROF. JOSUA LINDAHL, State Geologist, 



Springfield, 111.: 



DEAR SIR In response to your request that I should prepare 

 for the Eighth and final volume of Prof. Amos H. Worthen's 

 Reports upon the Geology of Illinois, a biographical notice of 

 the learned and lamented author, I beg to submit the enclosed 

 account of his life and estimate of his personal and scientific 

 character; and to remain, most truly, 



Your obedient servant, 



N. W. BLISS. 



