also. And what I consider a new genus of Bacillariaceie, which I have 

 called Ancile radiata. It is free and found rarely in the salt water in 

 Jamaica Bay, Rockaway and at Foleys, and South Beach, Staten Is- 

 land. But of this I shall speak hereafter. Mr. W. A. Terry says he 

 has found broken fragments of Brunia but this I myself have not seen, 

 although common in a deposit which I will also describe hereafter 

 taken at fifteen feet from the surface at Hoboken, N. J, I, another 

 day, visited Coney Island, N. Y., and searched for infusorial earth and 

 this time was fortunate enough to find it at Sheephead Bay, which is a 

 village just on the Long Island side of Coney Island Creek. It was a 

 grayish colored clay, one foot underneath the sand taken at low water, 

 about eight feet from the surface of the soil. At Canarsie Landing, 

 which is on Jamaica Bay between Coney Island and Auvergne, I did 

 not find the infusorial earth, but I was there a very short time. I did 

 find glacial phenomena and indication of the elevation of the coast, but 

 of those I shall not speak now as they are not microscopical. But the 

 finding of Bacillariaceie in the infusorial earth, as belonging to the 

 Upper Neocene period, is thus a fact, and the date of so finding is 

 worthy of record. Perhaps they will be found more inland on Long 

 Island hereafter. I have searched for them as far inland as the 

 city of Jamaica, but without result. 



This layer is in the Upper Neocene, or perhaps the Plistocene, but 

 the placing of it definitely is extremely difficult if not impossible at 

 present, for on describing a fossil marine Diatomaceous deposit from 

 St. Augustine, Florida, Mr. Charles S. Boyer says (Bulletin of the 

 Torry Botanical Club, April, 1895, Vol. 22, No. 4, page 172) that it, 

 the St. Augustine deposit, "overlies an Eocene deposit and is beneath 

 the Plistocene " and that the Barbadoes deposit, which corresponds 

 partially with it, «« is now claimed to be Pliocene." In fact, as I have 

 already pointed out, the marine fossil layers of Bacillariaceie, be it from 

 Mors, Denmark; Simbirsk, Russia ; Sentz Peter, Austria; Oran, Algiers; 

 Moron, Spain ; Argentina ; Payta, Peru ; New York to Virginia, Cali- 

 fornia and New Zealand, including the Nicobar Islands, are Neocene, 

 be that Miocene or Pliocene. 



—Arthur M. Edwards, M. D., Newark, N. J. 



The succession of Glacial changes.-Evidenee has been accumu- 

 lating during the last few years in favor of the periodicity of glacial 

 action. Mr. Geikie recognized in Europe six distinct glacial epochs 

 separated by genial periods, making in all eleven glacial and inter- 

 glacial stages. For convenience he gives each of these horizons a 

 separate name. The climax of glaciation was reached in the third 



