JOURNAL AND PROCEEDINGS. 



NOTES ON SOME RECENT ADDTflONS TO ONTARIO 

 PAL/f:ONTOLOGY. 



RE A D BEFORE THE HA MILTON A SSOCIA TION. 

 BY COL. C. C. GRANT. 



The tunnel on Hunter Street, Desjardine's Canal and the 

 southern shore of Lake Ontario, near Winona and Grimsby, afforded 

 me, during the past summer, an opportunity of securing some rare 

 and fairly well preserved Cambro Silurian fossils, embedded in drift 

 shingle. I need not state how difficult it must be to declare whence 

 travelled specimens came from originally. Take our Trenton and 

 Hudson River rocks (lower Silurians), for instance ; so many fossils 

 are common to both. We may find it no easy matter to assert as to 

 which of the series these wandering, water-worn fragments belonged. 

 The term " Cambro Sil." has been objected to, and when rocks are 

 found in situ and the horizon clearly defined, it may seem unnecess- 

 ary to add to the nomenclature, but where the conditions are 

 different, as in " the Drift," the name is assuredly convenient when 

 characteristic specimens of a series are absent. Where a doubt 

 exists, the general term " Cambro Sil." appears to be more suitable, 

 since no error can possibly occur. The Drift specimens of the tunnel, 

 Hunter Street (with perhaps one or two exceptions), were well-known 

 Upper Hudson ones, and were rather few in number ; this may be 

 owing in a great measure to cemented gravel adhering to the shingle, 

 which prevented one from noticing the indications outside. The 

 Lake Iroquois Beach, at the canal, presented some interesting slabs 

 before the debris at the foot of the cliff, near the bridge, was broken 

 up for road metal. This locality is well-known to possess fossilifer- 

 ous shingles, containing many rare and well preserved fossils, chiefly 

 from the Upper Hudson River (or Bala) series of our English 

 Geologists. However, a Trenton Slab also occasionally puts in an 

 appearance, as well as others, difficult to locate since the organic re- 

 mains are common to both. It has long been a favorite hunting ground 



