1895.] 3IICR0SC0PICAL JOURNAL. 333 



from extra North American localities. With those, micros- 

 copists are generally familiar. 



At an earlier period, when I was less familiar with the 

 Radiolarian clays and their method of preparation, I trans- 

 mitted to Rev. Fred'k B. Carter some of the material for 

 his stndy and examination, which proved to he a disap- 

 pointment to him. This related to the ease of treatment, 

 cleaning aiid concentration of fossils therein, as negative 

 results seemed to ohtain from such treatment as the 

 material received at his hands. In order to compensate 

 for the negative results, I made a small cleaning for his 

 inspection and sent it to. him with an urgent request to 

 mount the same, so that there might he at least one com- 

 petent witness to the presence of a Radiohirian deposit in 

 this section. Complying with my request, he kindly ex- 

 amined the material and sent a list of the few species 

 noted hy him aad comprised under the following Genera : 

 Cenosphffira, Ethmosphfera, Halioma, Actinoma and 

 Elipsostylus. At ahout the time of this approximate 

 identification of the genera, I was preparing some notes 

 on the micro-geology of Alabama. The names of these 

 srenera were introduced into the notes relative to the 

 Alabama Radiolarian deposits, full credit being given to 

 Rev. Fred'k B. Carter for his aid. Reference may he 

 made to the Rej)ort of The Alabama Geological Survey, 

 entitled " Report on the Geology of the Coastal Plain of 

 Alabama, 1894." 



Recalling, in this connection, the eloquent plea made by 

 Rev. Mr. Carter, on a former occasion, for students to 

 take up and pursue the study of the Radiolaria as a fruit- 

 ful source of investigation, I volunteered to show my 

 aj)preciation, and to lend my help in popularizing the 

 study which he regarded as being neglected. With this 

 object in view I sent him a large specimen of a Radiolarian 

 chalk, flunking that anything, however barren in aspect, 

 though giving promise of Radiolaria in return for its 



