THE AMERICAN 



MONTHLY 



MICROSCOPICAL JOURNAL. 



Vol. XVI. NOVEMBER, 1895. No. 11. 



On the Radiolarian Deposits of the States of Alabama and 

 Mississippi. 



By K. M. CUNNINGHAM, 



MOBILE, ALA. 



For several years past, readers of both Journals edi- 

 ted by Cbas. W. Smiley have been treated to an interest- 

 ing and valuable series of papers from the pen of the 

 Rev. Fred'k B. Carter bearing on the study, classification 

 and distribution of the Eadiolaria. In one of the intro- 

 ductory articles, he kindly identified me with his work 

 by quoting therein, from an article of mine, entitled 

 " Diatomology " which had appeared somewhat earlier. 

 But before the initial paper of his series had appeared in 

 the American Monthly Microscopical Journal, I had 

 already put upon record the occurrence of Radiolarian- 

 bearing chalks and shales in the vicinity of Enterprise, 

 Miss. When I now reflect on the relatively simple and 

 inconspicuous manner in which it was done at the time, 

 in contrast to my present experience and familiarity with 

 the deposits, I have occasion for surprise in several par- 

 ticulars. In my earliest study of the material, and with 

 the object in view of putting it on record, I prepared 

 about ten slides, and indicated the position thereon of 

 about eighty of the Radiolarian bodies. I did this by 

 means of dots of India ink on the cover-glasses, so as to 

 enable the fossils to be easily found. These slides, ac- 



