Tnterglacial Fossils. — Coleman. XI 
striatinum, as well as pearly fragments of Unio. The fossil- 
iferous bed is sandy and reaches about 25 to 35 feel above the 
Don. 
The most interesting exposure of all has recently been 
opened at the Messrs. Taylors' brickyard, nearly a mile north 
of the Gerrard street bridge. Many specimens of Unio have 
been collected here by myself, Mr. Blue, Mr. Townsend and 
the workmen employed in the quarry. The majority of them 
are so fragile as to fall to pieces with even the most careful 
handling; and it was only after following the advice of Dr. 
Dall, of the Smithsonian Institution, to soak the fossils in 
shellac varnish diluted with alcohol, that they could be at all 
satisfactorily preserved. 
My thanks are due to Dr. Dall and his aid, Mr. C. T. Simp- 
son, for the determination of the specimens, which include the 
following species , — Pleurocera subulare. P. elevatum, an un- 
determined species of the same genus and a single specimen 
which may be P. pallidum ; Valvata sincera, Splnerium striati- 
num, Unio phaseolus, U. clavus, U. pustulosis, U. pustuloses 
var. schoolerafti, U.occidens (?), U. luteolus, U. undulatus, I 
rectus, U. trigonus, U. solidus. 
Mr. Simpson has described these fossils in the Proceedings 
of the U. S. National Museum* and states that at least three of 
the species of Unio and one Pleurocera are no longer inhab- 
itants of the St. Lawrence drainage area, but belong to the 
waters draining into the Mississippi. 
A list of the species now living in the vicinity of Toronto, 
made out for me by Dr. Brodie, includes only four of the 
species obtained at the quarry, viz. Valvata sincera. Sphserium 
striatinum, Unio luteolus and U. rectus. Specimens of the two 
Unios which he has sent me are thinner-shelled than the fos 
sils of the same species. 
Three specimens of wood obtained at the quarry just above 
the lower boulder-clay were forwarded to Prof. Penhallow, of 
McGill University, for examination. As his reporl is ap- 
pended to this paper, it is sufficient to state at this point thai 
he refers the specimens, which he finds badly decayed and 
crushed, provisionally to the nearest living species, Fraxinus 
quadrangulata, Quercus obtusiloba, and Taxue baccata, var. 
* Vol. xvi, pp. 591-595. 
