Nczv Areas of Nepheline Syenyte. — Miller. 21 
Accordingly, from the evidence thus far available the ge- 
ological history of mount Orford would be briefly told thus : 
1. The parent rock of the serpentine was either intruded 
in extensive sheets amongst the old stratified rocks, or was 
extruded as a surface flow and these subsequently deposited 
upon them. 
2. These rocks then became very intricately folded to- 
gether, and were much worn down by long denudation. 
3. An eruption of diabasic material took place along the 
eastern edge of the serpentine, which gave rise to the present 
mass of the mountain as well as to whatever part of it has 
been since removed by denudation. It is probably to this 
period, too, that the extrusion of the mountains along lake 
Memphramagog, Owl's Head, Elephantis, Hog's Back, be- 
long, in which "serpentine very rarely, if ever, occurs.* 
ON SOME NEWLY DISCOVERED AREAS OF NEPH- 
ELINE SYENYTE IN CENTAL CANADA. 
By WiLLET G. MILLER, Kingston, Ontario, Canada. 
In a recent paper Dr. F. D. Adams refers to the probable 
occurrence of a large area of nepheline-bearing rocks on the 
northeast coast of lake Superior, western Ontario. f During 
the summers of 1897 and 1898 the writer was engaged in trac- 
ing out some belts of these rocks in eastern Ontario and 
showed that they cover a large area in this part of the prov- 
ince. $ Prior to 1897 nepheline syenyte was known to occur 
in only one outcrop in the province. § Late in 1896, how- 
ever, corundum was found in this part of the province and as 
the deposit of this mineral appeared to be of economic value, 
the writer was engaged to mlake an examination of it and to 
search for other deposits in the district. 
On examining the rocks in which the corundum occurred, 
it was found that they were generally either nepheline syenyte 
or of some other variety of syenyte. Outcrops of these rocks 
were traced along one belt about seventy-five miles in length 
and along two other belts of less length. In some parts of. 
•Dr. R. W. Ells, op. cit. p. «0 J. 
tjournal of Geology, May-Jvine, 1900. 
JReports. Bureau of Mines, Toronto, 189T-8. 
SAm.Jr. Science, July, 1894. 
