HAMII.TON SCIENTIFIC ASSOCIATION 137 



the Section fragments of a few of the specimens which were 

 embedded in the clay along the shore. 



Note B. — When the writer read the first paper on last 

 5'ear's collecting season he produced specimens of Archaean 

 and other rocks from the Glacial (Erie) Drift at Winona, a 

 belief was expressed then that valuable deposits of Feldspar 

 and Granites must exist somewhere north of the district, from 

 the extract accompanying the former may be said sooner than 

 was expected. Feldspar is extensively used also in the manu- 

 facture of the beautiful Porcelain fiom China. 



EXTRACT. 



"There has been lately a discovery of minerals some 

 hundred miles north of Cobalt, and a substance called felspar 

 has been found. The seam is a very valuable one, indeed^ 

 for a mixture formed from sand, clay and felspar, after being 

 subjected to intense heat, forms a hard cement called kremite. 

 It is used for buildings in most of the large cities in Russia, 

 and has been found perfectly satisfactory ; the bricks formed 

 from the same being far superior to those made of clay alone. 

 A company should be formed to develop that section of the 

 country, where it is to be found." 



