Section C— JJradford, 1900. 



Canadian Pleistocene Flora and Fauna. — lioporl of titc Committee, 

 runxi;>ti)i<i of Sir J. AV. IJ.wvstx (Chairma/i), Professor D. 1-*. 

 J*KM[ALLO\v, Dr. II. Ami. .Mr. (1. \V. Lampi.i;(;h, and Professor 

 A. P. Coi.EMAN {^ecrclarii)., rea.p/)oiided to continne the invesiitja- 

 tion of the Canadian ]*leist<>cene Flora and Fauna. 



VAC.K 



T. On the Ph^'istorcne near Toronto. By Trofessor A. P. CoLEMAN . . . 1 



11. On the Plehtoeeiw Flora of the Don Valley. By Professor D. P. Penh allow 7 



't ' 



During the past year the Committee has suffered a .severe loss through 

 the death of its di.stinguished chairman, Sir J. W. Dawson, but th(^ work 

 has heen continued by three of its members. Dr. Ami has taken charge 

 of the Ottawa valley deposits. Professor Penhallow has examined the 

 fossil riora from both Ottawa and Toronto, and the J>e(?f^t)»<ry lias con- 

 tinued his investigations near Toronto. The fpWt5\yrw w^pSrt on the 

 Pleistocene near Toronto has been prepared^Uj'^^ii^ Secretary, infk^iat 

 on the Flora of the Don Valley by Profess 



^ r A .'M C i L 



1. On the Pleistocene near Toronto. P>]i Pt^essor A. P. Colema 



Since the preparation of the last report two^>H^ lo^^ffTTties near 

 Toronto have proved of interest, one near a bend of the B^n a little east 

 of the well reported on last year, the other a series of sand deposits in 

 the western part of the city. The outcrop at the bend of the Don just 

 north-west of Toronto was discovered years ago by Dr. G. J. Hinde, who 

 had described so excellently the section at Scarborough Heights, and who 

 has been good enough to hand over his material to the Secretary. Until 

 last year, however, it was not certainly proved to be interglacial. The 

 section at the bend of the Don is of special interest, since it occupies an 

 interglacial valley about 700 feet wide, having steep walls of Hudson 

 River (Cambro-silurian) shale, rising 8 or 10 feet on the eastern side and 

 IG feet on the western. The section is as follows : — 



4. Coarse irravcl with boulders and no shells, 4 to 8 feet . . 37 to 40 

 3. Brown clay with sandy layers containing unios, Jv:c., 4 or 5 feet 33 or 34 



2. Blue clay with sandy layers containing shells and wood, 6 feet 20 

 1. Coarse shingle with clay and peaty layers, 4 feet . . .23 



River Don, above level of Lake Ontario ... .19 



The lowest layer goes below the level of the Don, so that the bottom 

 of the section is not exposed. Th(5 third layer corresponds exactly in 

 materials and fossils with the unio beds referred to in last year's report, 

 which are in place 100 yards to tlie west, and there overlie a thin sheet 

 of boulder clay resting on a cliff of shale 16 feet in height. Beds 1 and 2 

 contain trees of a warm climate, as determined by Profe.ssor Penhallow, 

 and twelve species of freshwater shells, according to determinations 

 kindly made by Dr. Dall of the Smithsonian Institution, Washington, 

 two of the shells, Unin {(JuadrnJa) pyramidafa and Anodonta (jrandia, 

 being new to the Toronto formation. 



The most important feature of this section is the evidence afTorded that 



c 1 



