100 
ments would be the place for the gathering 
of clays and vegetation which would lie 
unconformably with the synchronous shore 
deposits. The paper was very clearly pre- 
sented and was suitably illustrated by the 
jantern. 
Origin and Age of an Adirondack Augite 
Syente: H. P. Cusnrne, Cleveland, Ohio. 
Recent work in the field, together with 
chemical analyses, demonstrates that the 
Adirondack anorthosite shows a certain 
amount of differentiation and passes locally 
into an augite syenite, all intermediate 
phases being found, as was contended by the 
writer in a paper read before the Society 
two years ago. There is, however, much 
evidence now at hand to show that much 
of the great body of augite syenite gneiss 
in the Adirondacks is older and to be re- 
ferred in age to the main body of gneiss of 
the region, whatever that may be. Criteria 
for distinguishing between the two syenites 
have not been developed. The paper was 
presented by permission of the State Geolo- 
gist, and was illustrated by an extensive 
series of analyses. J. F. Kemp remarked 
the abundance of related rocks in the 
regions to the south, and then the session 
adjourned for the day. 
In the evening the annual dinner was 
held, with Professor Emerson in the chair 
and fifty-five present. An address of wel- 
come to the Society was made on behalf of 
the Regents of the University by Dr. T. 
Guilford Smith. The proposition for the 
erection ofa State museum in which to house 
the collections of the various scientific de- 
partments was discussed, and resulted in a 
subsequent resolution which will be given 
below. 
On Friday morning the Society met at 
9:30 and listened toa report of the Commit- 
tee on Photographs by its chairman, N. H. 
Darton. The collection now numbers over 
2,000, and is stored in the building of the 
SOCLENCE. 
[N. 8S. Von. XIII. No. 316. 
U. S. Geological Survey in Washington. 
It is a valuable one, and will be revised 
and condensed, and a published list will 
be prepared at an early date. This collec- 
tion has made accessible to the Fellows 
many photographs made by surveys, both 
State and national, and by private individ- 
uals. 
The Laurentian Limestones of Bafinland: Rox- 
ERT BELL, Ottawa, Canada. 
The discovery of great quantities of crys- 
talline limestones in Baffinland was an- 
nounced in the writer’s ‘Summary Report 
for 1897.’ The geographical position and 
physical aspect of the region were described. 
The general character of the Laurentian 
System in Hudson Straits was outlined. 
The rocks of the north side are newer or 
Upper Laurentian, as far as known, ard 
differ from those of the south shore. Regu- 
larity of strike and dip is pronounced. 
Enormous developments of crystalline lime- 
stones have been met in southern Bafiin- 
land. Their general characters were de- 
scribed. Great thickness is presented by 
the beds, some of them being over a 
mile across and running regularly for long 
distances. They are evidently stratified 
aqueous deposits. Questions were raised 
as to the origin of such limestones. The 
associated rocks are gneisses and schists, 
and the accompanying minerals are chiefly 
feldspar. Owing to the absence of trees, 
the limestones are conspicuous in the land- 
scape and are not more eroded than the 
gneisses. Comparisons were drawn with 
Laurentian limestones elsewhere, the former 
physical conditions and the older and newer 
glaciations of Baffinland were discussed as 
affecting the limestones. The existing gla- 
ciers there were described. The paper was 
illustrated by the lantern. There was no 
discussion. 
James F. Kemp. 
(Lo be concluded. ) 
