No. 101.] 
153 
lar Spar. The trivial name I have conferred upon it, is Rensse^ 
laerite, in honor of the Hon. Stephen Van Rensselaer — one, who 
has done as much to promote science in this country, by his pa-' 
ironage^ as any have done by their labors. 
This substance is found in Canton, St. Lawrence county, near 
the south part of the town. There are several other places 
where it occurs, but here I met with ihe naineral firsts in a Qvys^ 
tallizod form. 
[Assem. No. 161.] 
