NEW YORK STATE MUSEUM 



still marbles of good quality exposed in places where as yet no 

 attempt has been made to utilize them. 



Feldspar. Mr Hindshaw has also investigated certain locali- 

 ties in the search for feldspar of suitable quality for use in the 

 manufacture of pottery and reports favorably upon a feldspar 

 vein near Corinth, Saratoga co. ^ 



Peat. Some attention has also been paid to the peat deposits 

 and materials gathered for future experimentation with refer- 

 ence to the utilization of these raw materials. 



Kaolin. Some residual clays occurring near Thurman and Ti- 

 conderoga have been examined with reference to their commer- 

 cial value, and the finding of such clays in the Adirondack 

 regions is a matter of considerable scientific interest as indicating 

 the probable escape of such deposits from the abrading action of 

 the glaciers. 



Graphite. The graphite deposits of Ticonderoga and Lake 

 George have been examined and these examinations have served 

 to show the presence of immense quantities of this mineral dis- 

 seminated through the limestones of the Adirondacks. It is be- 

 lieved that processes can be devised by which this ore, not now 

 used, can be extracted. 



Iron. A visit to the iron region of Mineville showed great 

 activity there. The opening of new mines and testing by dia- 

 mond drill borings have shown the existence of an abundance of 

 ore, and recent improvements in magnetic separation have sim- 

 plified the matter of getting the ore on the market in suitable 

 form for reduction. The increasingly large deposits of tailings 

 from the concentrators here afford a practical field for the es- 

 tablishment of a cement building block industry. 



Sandstone. An examination of the outcrops of the Potsdam 

 sandstone near Fort Ann was made. This rock is here a close 

 grained quartzite containing such a small amount of iron and 

 other impurities that its value as ganister, glass sand and per- 

 haps a flint for pottery purposes needs little demonstration and 

 its existence should be made known to users of these materials. 

 Further reference to the economic work of the department is 

 made under the notice of the office work. 



Office work 



All of the field operations have necessarily involved their 

 elaboration in the office. Consequently time has been spent by 



