Nezu Areas of Nepheline Sycnyte. — Miller. 23 
these are the great variation in size of grain and mineralogical 
composition in parts of the same masses, the presence of grains 
of calcite and scapohte, both of which have the appearance of 
being original constituents, and the occurrence in some of the 
masses of crystals of apatite some inches in length. It will be 
seen that in these features these rocks resemble to some extent 
certain of the Canadian apatite deposits. In these deposits 
water, in a highly heated state, has been considered to be the 
chief agent concerned in the deposition. It would seem then 
that water may have played a more inportant part in the depo- 
sition of the nepheline-bearing series than in the case of other 
so-called igneous rocks. 
A short time ago the writer made a hurried trip into an- 
other part of Quebec about 140 miles to the northwest of the 
locality to which reference has just been made, and was some- 
what surprised to find an outcrop of nepheline syenyte and re- 
lated rocks there. This outcrop is situated on the Kippewa 
river about twenty miles to the northeast of the southern end 
of lake Temiscaming, which forms the head waters of the Ot- 
tawa river. The breadth of this outcrop, so far as exposed 
above the surface of the water and drift material, is about 400 
yards. The rock in the outcrop shows a well-developed schis- 
tose structure and a considerable variety of mineralogical com- 
position, in a direction at right angles to the strike, as do many 
of the outcrops in Ontario. Much of the material has the com- 
position of mica or hornblende syenyte, while some of it is more 
basic, holding a high percentage of hornblende. A not in- 
considerable portion of the rock has the composition of nephe- 
line syenyte. The nepheline is in grains of different size up 
to pieces three inches in diameter. Some of the hornblende as- 
sociated with the nepheline and feldspar is in the form o\ 
masses whose diameter is four inches. 
It was observed, in tracing out the nepheline rocks in On- 
tario, that they were nearly always associated with crystalline 
limestone. No attempt was made, however, to explain this 
association. 
The first outcrop found in Quebec during the past season 
is also associated with crystalline limestone. 
In the district lying immediately to the west and south- 
west of the Kippewa outcrop which has been geologically sur- 
