THE HAMILTON ASSOCIATION. 1 49 



FRAGMENTS OF PALEOZOIC SEA-FLOORS FROM 

 HAMILTON, ONT., AND ANTICOSTL 



Read before the Geological Section, February 26th, i8g2, 



BY COL. C. C. GRANT. 



Some years ago I forwarded to an old correspondent of mine in 

 Dublin, the late Professor Bailey, a small collection of fossils for the 

 museum attached to the Irish Survey office. The greater portion 

 was obtained near the city of Hamilton. In returning thanks for 

 the donation, he expressed such warm admiration for a few Clinton, 

 or May Hill, sandstone slabs enclosed in the parcel, that, in a sub- 

 sequent contribution, I presented him with nearly all the like ones 

 in my possession, and hunted up a few others also for his accept- 

 ance. " I consider the slabs of far more interest," he remarked, 

 *' than any of the single specimens we received from Ontario. One 

 could learn more of the invertebrates, corals, bryozoons, thus accu- 

 mulated, of the period, than from any number collected singly from 

 beds bearing the very vague term, ' Silurian Series.' " He had never 

 seen any of these instructive and interesting slabs either figured or 

 described. Unfortunately, I have not been able since to replace 

 many of them. I succeeded, however, in getting a few for the late 

 Professor E. Billings and McGill University ; as also some fragments 

 for your inspection to-night. 



Commencing with the Grey band, there is a thin sandstone bed 

 resting on a slight parting of shale ; about a like quantity of the same 

 material overlies it. It was from this layer of the Medina that I 

 obtained, in addition to several plant remains, specimens which 

 enable me to increase the rather meagre list of fossils of the series, 

 as given by Dr. Spencer, by the following unrecorded, I think, as 

 yet : Stromatoporse, 2 ; Tentaculites, 2 ; Athyris, 2, Athyris umbo- 

 nata, Anticosti (Billings) i ; Fragments Trilobites, 2 ; Crinoid Stems, 

 2, both in Clinton also ; Zaphrentis, i, another described ; Favosites, 

 I ; small coiled shell, orifice concealed, i. The latter occurs also in 

 one of the massive layers, with a Stromatopora and an Orthoceras 

 in the Redpath Museum. The fucoid Mr. Walker gave me for Sir 



