64 THE AMERICAN MONTHLY [Feb. 



Keys the most southern of which is Key West. I wan- 

 dered South on the promentory of Rockaway, but found 

 notliing but white siliceous samd. They were not digging 

 anywhere that I could find. I wandered North in the 

 direction of Far Jlockaway where the land became higher 

 and was covered by the white " iceberg clay which evi- 

 dently came from the Northwest. At Auverne they had 

 been digging a ditch on the opposite side of the promen- 

 tory to the Atlantic ocean, on Jamaica Bay. The digging 

 was over six feet deep because 1 who am six feet tall, 

 could not see over the top of the ditch. They had thrown 

 out some iceberg clay and below that some greyish clay 

 without any stones in it. I saw at once that it was dif- 

 ferent in character from the soil in the marshes which I 

 had learned belonged to the raised coast or Champlain 

 period. I took some home and examined it and came to 

 the conclusion it was perhaps Pliocene Tertiary belong- 

 ing to the Neocene period. At last I had found what I 

 wanted. We will find the Miocene if it exists there be- 

 tween Auverne and Aqueduct and I mean to look for it. 

 I cleaned some of the Pliocene clay and found the fol- 

 lowing marine forms of BacillariacesB and Dictyocha, 

 which are Radiolaria, in it. Some few forms escaped me 

 but will be found hereafter. 



Achnanthes subsessilis, C. G. E. 



Actinocychus ehrenbergii, J. R. 



Actinoptychua undulatus, C. G. E. 



Auliscus ccelatus, J. W. B. 

 " pruinosus, J. W. B. 

 *' radiatus, J. W. B. 



Aulacodiscus germanicus, C. Gr. E. 



Amphora ovalis, F. T. K. 



Amphiprora elegans, W. S. 



" navicularis, C. Gr. E. 



" pulchra, J. W. B. 



