556 



NEW YORK 8TATE MUSEUM 



is washed and run through strainers and pipes to settling vats, 

 where it stands for twenty-four hours. The water is then drawn 

 olf and the material shoveled into the press. Here it is made 

 into cakes four feet square and four inches thick. These are 

 subdivided into cakes one foot square and piled under sheds to 

 dry. For this information I am indebted to Mr. Thomas W. 

 Grosvenor, of Herkimer, the proprietor. 



The White lake material is at present only used for polishing, 

 though similar material is used for absorbing nitroglycerine in 

 the manufacture of dynamite. 



The following analysis by Dr. Gideon E. Moore, of New York 

 city, is furnished by Mr. Grosvenor : 



Water and volatile matter 12.120 



Silica 86.515 



Alumina 0.449 



Ferric Oxide 0.374 



Lime 0.120 



Undetermined 0.422 



100.000 



Talc. 



This material occurs near Edwards, St. Lawrence county, 

 N. Y., in a narrow belt several miles long and about a mile wide. 

 There are several quarries on the line of this belt. It is ground 

 in mills near Gouverneur under the control of the Asbestos Pulp 

 Co. .It is chiefly used in the manufacture of paper and a small 

 quantity is used in soap, paint and other minor purposes. The 

 annual product is about 30,000 tons, valued at about $2±0,000. 



Peat. 



This material, which is the residue from the partial decay of 

 plants in water, is of frequent occurrence but is only used locally 

 as a fertilizer. 



