LIBRARY- 
100 
GEOLOGY. 
Edited by II. M. Ami, LL. I)., F.G.S.A., Etc. 
On a small collection of Fossils from the Trenton Limestones of Port 
Hope : Port Hope is situated on the north shore of Lake Ontario, near 
the mouth of Jones's Creek, a stream which is slowly cutting for itself a 
bed in the hard Trenton limestone. In former ages it was a stream of 
much greater dimensions, and evidences of raised beaches are seen along 
both sides of its valley. The higher ground is here occupied by clays, 
mostly glacial, and sub aerial denudation has played a prominent part in 
making for the town its peculiar orographic site above the present level 
of the lake. 
On the occasion of my last visit I saw an outcrop i( limestone, at 
the Rapids near the Bridge and foot of the main business street, from 
which a number of fossils were obtained, or noted. They were all 
typical or rather common Trenton forms, and are here recorded only 
because I have so far seen no list of fossil remains from this locality. 
The species are as follows : 
i. Crinoidal fragments. 2. Heterocrinus simplex v. Canadensis, 
Billings. 3. Stictopora acuta, Hall. 4. Prasopora Selwyni, Nicholson, 
( = P. lycoperdon, Rones.) 5. ? Diplottypa Whitcavesi, Nicholson. 
6. Lingula sp. 7. Ortliis testudinaria, Dalman. 8. Lepttena sericea, 
Sowerby. 9. Strop/iomena alter nai'a, Conrad. 10. Anazyga recurvi. 
rostra, Hall. 11. Vanuxemta Montr ealensis, Billings. 12. Modiolopsis 
sp. indt. 13. Ttochonema timbilicalum, Hall. 14. Orthoceras sp. 15. 
Dalmaniles callicephalus, Green. 16. Asaphus platycephalus, Stokes. 
17. A. Canadensis, Chapman. 18. Calymene senaria, Conrad. 
It would thus appear that the light grey, somewhat bituminous and 
impure limestones of Port Hope belong to the Trenton and well up in 
that formation. With time to collect along Jones's Creek, a careful 
observer should obtain much interesting material. H. M. A. 
THE NEX r EXCURSION 
Will probably he to Paugan falls, on the Gatineau Valley Railway. 
Arrangements are being made for as early a date in September as 
possible. 
