350 Proceedings of the Eoyal Physical Society. 
Wednesday, Fehuary 28, 1866.— Mr William Turner, M B., Pre- 
sident, in the Chair. 
The following Donations to the Library were laid on the table and 
thanks voted to the donors : — 
1. Geologiske Undersogelser Bergens omegn af Th. Hiortdahl og M. 
Irgens — Udgivet efter det Academiske Collegiums Foranstaltning som 
Universitets — Program for Andet Halvaar 1862. Med et Tilloeg om 
Fjeldstykket Mellem Loeerdal og urland samt om Profilet over Filefjeld 
Af Dr Theodor Kjerulf. Christiania. P. T. Mailings Bogtrykkeri. 
1862. — 2. Beskrivelse over Lophogaster typicus, en Maerkvaerdig Form 
af de Lavere Tifodde Krebsyr af Dr Michael Sars Professor ved 
Christianias Universitet. Christiania. 1862. From the Royal Univer- 
sity of Christiania. — 3. The Canadian Journal of Industry, Science, and 
Art. November 1865. From the Canadian Institute, Toronto. — 4. 
Programme de la Soci^t^ Batave de Philosophie Experimentale de Rot- 
terdam for 1865. — 5. Geologist's Association. Annual Report for 
1865. From the Council. — 6. Vancouver Island Exploration, 1864, 
Printed by authority of the Government. From Robert Brown, Esq. — 
7. Transactions of the Royal Scottish Society of Arts. Vol. VII. Part 1. 
From the Society. 
The following Communications were read : — 
I. Notice of the Physical Characters of Rupert District, Red River, 
Hudson Bay. Communicated by William Rhind, Esq. With 
exhibition of Specimens, collected by Major George Seton. 
Kupert's Land forms the south-west portion of that vast 
valley which surrounds Hudson Bay, North America. From 
the north border of Minnesota, a territory of the United States, 
and that slightly-elevated watershed where the head springs 
of the Mississippi Eiver have their origin, the Eed River also 
takes its rise, but flow^s north in a contrary direction to 
the Mississippi, passes through the centre of Eupert's Land, 
and terminates in Lake Winnipeg. From this river the 
district extends north-west and south towards the Eocky 
Mountains, with an area calculated at forty millions of acres. 
The face of the country is level, with a slight slope towards 
the north and east, the prevailing rock is a magnesian lime- 
stone, w^th fossils, belonging to the Upper Silurian system, 
of a white colour, sometimes of a chalky, and sometimes a 
cherty structure, is a good building-stone, and affords lime 
by burning, corresponding probably to the Landeilo strata of 
England. The strata form a series of low terraces rising 
in the direction of the Eocky Mountains. Above the lime- 
