Origiii of a fossil lake in New Jersey 

 and identification of it by the Bacillaria in it. 



By ARTHUR M. HDWARDS, M. D. 



This paper was first published in the Microscopie Notes for the 

 Ist. of March 1893. The Microscopie Notes is a paper printed by 

 means of the Mimeograph and issued to the authors friends and 

 admirers of the Bacillaria, hence the smali number issued it can 

 scarcely be said to rcach the public. It vvill also be noticed that at 

 the time it was printed the author had not read anvthing on the 

 subject writen by others so that the discovery of a fossil lake was 

 originai. This is important as it shows how marked were the indi- 

 cations of the occurrcnce of a fossil lake in New Jersey was and 

 also how he reasoned from it, the prcmisjs I mean. Now I do not 

 find anyone that bave examined the day in any shape to find the 

 Bacillaria. A republication seems callcd for in the case, 



VVhen wandering about in the noith eastern part of the state 

 of New Jersey three years ago, in l'S.jo, I was struck with the ap- 

 pearance of the red sandstone that prevails throughout this part of 

 the state, and the ridges of trap rock that push thcir way trough 

 and over the sandstone throughout the VVatchung and Second range 

 of Moutains hereby. I was scarching for geological phenomena and, 

 at the same time, I studicd the glacial clays that prevail. Of these 

 1 will speak clscwhere as they mark a wcvy important phase in the 

 matter which I was engaged in. And before I dwell upon them I 

 wish to say something of the region of country 1 speak of so that 

 others who are not familiar with the country may see it themsel- 

 vcs. (3n the cast side runs the Hudson, or North River. which has 



