177 



it was, is now ihe same as the meadows around Newark, N. J. was 

 formcd by the soil that was washed down slowly so as not to be 

 stratified. 



I beleive the loes was formed in the same way and not by 

 the wind, Baron Von Rtchofen to the contrary notwithstanding. The 

 loes I beleive belongs to the iceberg period. 



I bave now I say dwelt upon the magnesian limestone near 

 Blairstone, N. j. where the limestone was exposed in contact with 

 the slate ad bave collected specimens to examine. They were as fol- 

 lows. First a mud which occurs iu Cedar Lake. 



This is white and when I first had it I thought that it was but 

 another lacustrine sedimentary deposit of Diatomaceae, but it was 

 not. It was but another example of the lacustrine mari so commonly 

 found in limestone districts. It contained the remains of the shells 

 of mollusca. I saw a Lymnea and a Planorbis but did not determine 

 the a species » as they were called, at that time. The mari itselt 

 show under the microscope as particles of magnesian limestone ground 

 down fine by the ice in the iceberg period, I found the mari was 

 banked up towards the south west of the lake. 



The lake lays about south and north in the direction about 

 south west and north cast. There is no mari anywhere else. I exa- 

 mined going in a boat and travelling on shore, 1 went around the 

 lake several times, the north and south cast sides of the lake but 

 did not find any mari. 



The lake emties at the south west and were the brook is, and 

 this is subterranean. There are no brooks emptying into or out of 

 the lake anywhere else. That is to say although very small and 

 nearly dry at this season when I first saw it. The fall of the rain 

 had been scarce and dry weather had been prevalent for a long 

 time. At any rate the exit brook had always been subterranean, dis- 

 sappcaring from the sight and appeariing again where the read cros- 

 scs some distance on. This was always so, or at least within the 

 knowledge of man. Of course when the ice covered the country, 

 in the ice period, the outlet of the lake was covered up several 

 feet and gradually appeared when the ice melted. At I say at the 

 outlet of the lake during the melting of the iceberg had been to 

 the Southwest showins: that the ice had melted at that end first. 



