120 PROCEEDINGS OF THE CANADIAN INSTITUTE. 
it a misfortune that the duodecimal system had not been 
adopted in the first instance. ¥ 
FIFTEENTH ORDINARY MEETING. 
The Fifteenth Ordinary Meeting of the Session 1884-’85, 
was held on Saturday, February 2Ist, 1885, the President in 
the Chair. 
The minutes of last meeting were read and confirmed. 
The following list of donations and exchanges received 
since last meeting was read : 
1. Monthly Weather Review, Dominion of Canada, for January, 1885. 
2. Science, Vol. V., No. 106, February 13th, 1885. 
3. Annual Report of the Board of Managers of the Buffalo Historical Society, 
January 13th, 1885. 
4. Second Annual Report of the Board of Trustees of the Public Museum of 
the City of Milwaukee, October Ist, 1884. 
5. Anthony’s Photographic Bulletin, Vol XVI., No 1. 
6. Proceedings of the Royal Geographical Society, Vol. VI., No. 2, February, 
1885. 
7. Notice Historique de l'Université de Bruxelles, 1834—1884, par L.§jVan- 
derkinden. 
8. Bericht uber die Senckenbergische Naturforschende Gesellschaft, vom 
Juni, 1883, bis Juni, 1884. 
9. Finfter Jahresbericht der Geographischen Gesellschaft zu Hannover, 
1883-84. 
Mr. Vandersmissen gave notice that at the next meeting of 
the Institute, he would move that a committee be appointed 
to consider in what way the work of the Institute could be 
carried on in sections. 
Mr. Lennox read a paper on “The Fossil Sharks of the 
Devonian.” 
The subject of this paper was the fossil fin-spine of a shark, taken 
from the corniferous limestone, at St. Mary’s, Ont. It belongs to 
the genus Macheracanthus, Newberry. This genus is distinguished 
from all other fossil fish-spines by not being bilaterally symmetrical. 
They have been found only in the corniferous of Ontario, New 
