Rocks and Minerals of U, Canada 63 
of black basaltic looking masses, and of nearly pure felspar. 
The granites on the higher plateaus of the limestone of 
Frontenac, are so numerous and varied, that I am confident in 
a few hours,above a hundred specimens of different kinds 
might be procured, but there are no data either from their 
form or their position, on which a theory of a plausible nature, 
asto the route they have travelled, could be drawn. The 
diluvian dressings, as they are rather affectedly termed, have 
been so variously rolled about, that the side on which these 
boulders have received the most severe chastisement is un- 
doubtedly not recognizable. I have fancied that I could 
perceive there was a kind of regularity in their general po- 
Sition, but I cannot as yet speak with certainty. I conjecture 
that they are in nearly parallel lines on the flat tables which 
this part of the country affords, but I shall not hazard a 
Statement until I have oppoitunity to enquire more largely. 
Altogether, the subject of the Canadian boulders appears to 
me, one of the deepest interest. 
At Kingston, the mineralogical contents of the transported 
rocky masses are very interesting. Prase, schorl, varieties of 
mica, beautiful large crystals of felspur, garnets, and the 
other concomitants of gniess, granite and sandstones may be 
readily found, whilst Jarge blocks of quartz from the trans- 
parent limpid species, through almost all the shades to dark 
brown, exist ; I have a piece of quartz from a rock which is 
Wader ground and is of course a boulder, nearly as pure as 
the Brazilian kind, having but a slight milkiness about it, 
There are some amygdaloidal boulders here also, containing 
imperfect jasper, agate, &c., but they are merely curious 
from their present situation, and are very rare and much worn 
and disintegrated. 
Although secondary rocks visibly prevail in the neigh- 
bourhood it is well known that Kingston is the great point 
where the pure granite range, which forms the Thousand Is- 
lands, 
