Miscellaneous Localities oj JMinerals. 39 



the summit and be covered by a growth of trees. There 

 is an instance of one near Oxford Bridge estimated by 

 Capt. Partridge to be about 500 feet in height. The 

 rocks have the appearance of granite at a little distance, 

 but on examination, are found to contain carbonate of lime. 

 Rocks that have fallen from this mountain in "old time" 

 now form a good soil, while those known to have fallen fif- 

 ty years ago, scarcely begin to change their color. A grad- 

 ually retiring sea will explain to us (and I know of no oth- 

 er way to account for the fact) why channels were cut 

 deeper by streams, in rocks on high lands, than in those 

 lower down, as mentioned by Mr. Maclure in your Jour- 

 nal for January last, notwithstanding that the rocks are 

 harder and the accumulation of water, as well as of gravel 

 and sand, greater below. 



Tours with esteem, 



N. 



Art. IX. — JSI'otices of Miscellaneous Localities of Minerals. 

 1. By Dtt. Joseph Barratt. 



TO PROFESSOR SILLIMAN. 



Sir — 



I HAVE forwarded for publication in the American Jour- 

 nal of Science, a list of the minerals discovered in 

 Philipstown, Highlands of N. Y. Specimens of the most 

 interesting minerals herein mentioned, have already been 

 plentifully sent away and are to be found in many of the 

 mineralogical cabinets of this country; a desire to render 

 the list more complete has occasioned a delay in publish- 

 ing for the last three years. 



In Philipstown, Putnam County, New~York. 



1. Hard white Marble, in blocks, its texture is very com- 

 pact. 



2. Precious Serpentine^ in loose pieces, and variously 

 mixed with the marble ; some of the serpentine is very 

 beautiful. 



