any 
SECTIONAL TRANSACTIONS.—B, ©. 3879 
(d) Dr. E. K. Riprat.—The Chemical Union in Adsorption. 
(e) Prof. W. Lasa Miuter.—The Distribution of Colloidal Gold 
between T'wo Liquid Phases. 
(f) Prof. E. F. Burron.—The Mutual Action of Electrically 
Charged Particles in Solution. 
This paper deals with the mutual effect of particles in suspension in liquids 
due to their possession of an electrical charge. 
Continuing experiments first performed many years ago by Dorn, Billiter, 
and Freundlich, small spheres of metal have been dropped through columns of 
various liquids and quantitative measurements made of the charges carried down 
by these spheres. It is observed that a scattering of the particles takes place 
which is undoubtedly influenced to a great extent by the charges borne by the 
particles. 
(g) Mr. P. J. Motonsy.—The Absorption of Insulin by Charcoal. 
(h) Prof. Frank B. Kenricx.—Traces of Colloids in Distilled 
Water. 
A discussion of the source and removal of motes in distilled water used for 
light-scattering measurements, and of the part these motes play in the prevention 
of the supersaturation of gases. 
SECTION C.—GEOLOGY. 
(For references to the publication elsewhere of communications entered in the 
following list of transactions, see page 465.) 
Thursday, August 7. 
1. General Geology of the Toronto Region. 
(a) Prof. A. P. Coneman, F.R.S.—The Pleistocene Rocks of the 
Toronto Region. 
Almost the whole surface of the Toronto region consists of Pleistocene drift 
materials, including a sheet of boulder clay resting on Ordovician shale, a series 
of interglacial beds 185 ft. thick, four more sheets of boulder clay with inter- 
stratified clay and sand, and shore cliffs and shallow-water deposits of Glacial 
Lake Iroquois. 
The most interesting part of the drift is the Toronto Formation, of inter- 
lacial age, in which remains of nearly 200 species of plants and animals have 
een preserved, including numerous trees indicating a climate like that of 
Pennsylvania. 
Good sections of the interglacial beds are to be seen in the Don Valley and 
at Scarboro’ Heights, a few miles east on the shore of Lake Ontario. 
The Toronto Formation is much the most extensive and important inter- 
glacial formation in America. 
(b) Prof. W. A. Parxs.—The Paleozoic Strata at Toronto. 
The strata at Toronto belong to the Upper Ordovician. In the early days 
they were ascribed to the Hudson River Formation of the New York geologists ; 
later they were referred to the Lorraine. As a matter of fact, the fauna is only 
in part Lorraine and with a strong admixture of western (Maysville) forms. 
It is proposed to give a local name to the formation at Toronto—Dundas 
formation. 
While many fossils are common to the whole formation, it is possible on 
faunal grounds to divide it into four members—Rosedale, Davenport, Humber, 
and Credit. 
Exposures are to be seen on the Don river east of the city and in a very large 
quarry in the valley of that stream; west of the city numerous exposures occur 
along the valley of the Humber river and in quarries still farther west. 
A complete account of the stratigraphy and paleontology has been issued 
recently by the Ontario Department of Mines. 
