and Geology of Lake Ontario. 427 



more than a foot, when the green form returns for the same 

 thickness as before, and is followed by the common pale-brown 

 limestone down to the beach. 



The blue limestone of Catarroque (one to three miles W. of 

 Kingston, and ten to thirty feet above the lake), with that of 

 the higher parts of Point Henry and of the terraces among 

 the primitive rocks ten miles N.E. of Kingston, contain large 

 masses of red and white calcspar, with octohedral iron pyrites 

 imbedded or in druses, and of fibrous celestine under similar cir- 

 cumstances. Sometimes the celestine is by itself in balls from 

 an ounce to ten pounds in weight, in promiscuously aggre- 

 gated bundles of closely compacted fibres of a beautiful sky- 

 blue colour, of a silky lustre and often pale. Geodes of trihe- 

 dral pyramids of calcspar are not uncommon, with a delicate 

 network composed of the fibres of celestine running along the 

 apices of the crystals. The cliffs and ledges of brown lime- 

 stone on the shores of the outlet on Mr. Law's farm contain 

 shapeless masses of white foliated strontian. I have not met 

 with this mineral in any other part of the north shore of this 

 lake. It is plentiful in other forms, in this and more recent 

 limestones, in different parts of the valley of the St. Lawrence. 

 The varieties to which I have alluded, consist of the large 

 crystalline brown kind full of shells, found at Stony Island 

 near Sacket's Harbour, Carlston Island, and at Quinte Port- 

 age. It is usually in the upper layers. For ten miles west of 

 the village of Bath ( miles W. of Kingston) there are several 

 naked patches of brecciated limestone, the masses being pale 

 blue and brown, while the cement is of the same colours, but 

 much darker. In the woods between Marmora works and 

 Lake Ontario this breccia is not at all uncommon in the state 

 of displaced (but not rolled) fragments. Its situation in the 

 carboniferous limestone of this vicinity I do not know. The 

 Hallowell limestone is of a dull leaden brown, and is in thin 

 layers. It contains the coJiularia so characteristic of the above- 

 mentioned rock. 



In regard to thesucceeding rocks of Mr.Eaton's series, I have 

 met with nothing indicative of the presence of his grauwacke 

 and millstone grit, either in a fixed or loose state; further in- 

 quiries may find them : while nothing like his feirircrous slate 

 and sandstone are visible, the saliferous rock undoul)te(lly pre- 

 vails tliroughout the north shore, both in the immediate vici- 

 nity of the lake and as much as twenty miles in the rear. As 

 far as I am aware, it is only detected by its springs. The first 

 intimation of llieir existence is usually given by cattle. They 

 occur in swamps, jjonds, and running brooks in the woods, 

 where no strata are in sight, and wlu-ri- those close at hand 

 'i 1 2 and 



