207 



across, ill a baad of liino-itoiK:, on lot 7, range 1, of WakelieUl. Tliese^ 

 crystals vary from a dark -green to a light lavender blue, and may be 

 more rarely observed in semi-transparent crystals of a pink color, con- 

 stituting the spinel rul)y. These crystals are IjuilL up of granular 

 conchoidal fragments, which are often transparent. Some of these 

 cubes when broken are found to contain a nucleus of a black, vitreous 

 color, having the hardness of about four, and easily fusible before the 

 biow-pi[)e. Another instance of the alteration of this mineral was 

 observed in the sam3 region where a group of these crystals were 

 partly converted into a steatitic mineral, Ciystals of spinel from the 

 size of a pea to that of a bean are distributed through a grey pyroxene 

 rock that extends over many acres. 



Rutile. — Is found in small red geniculated crystals in barite oa 

 lot 12, range 12, of Templeton. 



Silicon Group — Quartz. — This mineral, not only forms one of the 

 commonest constituents of our rock masses, but fills many of the veins 

 that traverse them. It sometimes encloses such mineiuls as apatite, 

 pyroxene, titanite, itc. A. vein of this nature occurs on lot 18, range 

 2, of Wakefield. Crystals of this mineral are by no means common ; 

 however, a few good forms have been met with in Templeton and Hull, 

 of such shades of color as smoky-brown or amethystine, and colorless. 



Jasper. — This mineral occurs in a bed 2 feet in thickness, overlain 

 by gneiss, on lot 15, range 10, of Hull. It varies in color from a dark- 

 red to a chocolate-brown, sometimes mottled with yellow, and is sus- 

 ceptible of receiving a high polish, comparing favourably with similar 

 specimens from Lake Superior and Nova Scotia. 



It is occasionally marred by inclusions of hard foliated masses of 

 mica and crystalline specular iron. 



Agate.— A yellowish-brown chalcedony alternating with bands of 

 quartz may be referred to this mineral, occurring on lot 17, range 9, of 

 Templeton. 



Mr. W. L. Scott asked what Mr. Willimott's opinion was respect- 

 ing the natui'e of caxoclasite, whether he agreed with Mr. Lewis as to 

 its composition ; also wliy the barite shaft on the road to King's moun- 

 tain, which had been visited en pmscmt on one of the club excursions 

 h^d been abandoned ? 



