Reports and Proceedings. 35 
Full notices of this and the next two papers have been given in 
_the GroLtoeicaL MaAGazine, vol. i. pp. 225-7 (No. 5, November 
1865). 
2. : On the Structure of certain Organic Remains found in the 
Laurentian Rocks of Canada.’ By J. W. Dawson, LL.D., F.R.S., 
I.G.S. With a Note by W. B. Carpenter, M D., F.R.S., F.G.S., 
who corroborated Dr. Dawson’s observations on the structure and 
affinities of HKozodn, but stated also that, as he considered the cha- 
racters furnished by the intimate structure of the shell to be of 
primary importance, and the plan of growth to have a subordinate 
value, he did not hesitate to express his belief in its affinities to 
Nummulina. 
3. ‘On the Mineralogy of certain Organic Remains found in the 
Laurentian Rocks of Canada.’ By T. Sterry Hunt, Esq., M.A., 
F.R.S., of the Geological Survey of Canada. Communicated by 
Sir W. E. Logan, LL.D., F.R.S., F.G.S. (See above.) 
II. December 7, 1864.—The following communications were read : 
—1l. ‘On the Geology of Otago, New Zealand.’ By James Hector, 
M.D., F.G.S. In a letter to Sir R. I. Murchison, K.C.B., F.R.S. 
F.G.S. The south-western part of the Province of Otago is composed 
of crystalline rocks forming lofty and rugged mountains, and inter- 
sected by deeply cut valleys which are occupied by arms of the sea 
on the west, and by the great lakes on the east. ‘These crystalline 
rocks comprise an ancient contorted gneiss, and a newer (probably 
not very old) series of hornblende-slate gneiss, quartzite, &c. East- 
wards they are succeeded by well-bedded sandstones, shales, and 
porphyritic conglomerates, with greenstone-slates, &c., in patches, 
all probably of Lower Mesozoic age. ‘Then follow the great auri- 
ferous schistose formations, which comprise an Upper, a Middle, and 
a Lower portion ; and upon these occur a series of Tertiary deposits, 
the lowest of which may, however, possibly be of Upper Mesozoic 
date, while the upper, consisting of a Fresh-water and a Marine 
series, are unconformable to it, and are decidedly much more recent. 
(See also GroLocicaL MaGazine, No. 5, p. 233.) 
In describing the auriferous formations, Dr. Hector stated that 
the quartz-veins occurring in the schists were not often true ‘ fissure- 
reefs’ (that is, reefs that cut the strata nearly vertically and have a 
true back, or wall, independent of the foliation-planes), but are 
merely concretionary laminz that conform to the planes of foliation: 
gold occurs segregated in the interspaces of this contorted schist, 
but is rarely found én siti. 
Dr. Hector concluded with some remarks on the Tertiary volcanic 
rocks, observing that the period of their eruption must have been 
one of upheaval, and that the great depth of the valleys which have 
been excavated by glacier-action since the close of that period proves 
that the elevation of the island, at least in the mountain-region, 
must once have been enormously greater than it now is. 
2. ‘Note on communicating the Notes and Map of Dr. Julius 
Haast, illustrating the Glaciers and Rock-basins of New Zealand.’ By 
Sir R. I. Murchison, K.C.B., F.R.S., F.G.S.—In this note Sir 
D 2 
