20 
dren under five years, included in the above total, was 4938, 
a daily average of 32°8. 63 were over seventy years of age. 
In comparing these statistics with those for the previous 
month, a considerable increase is observable. 
February 17th. 
Dr. B, N. Martin in the chair. Fifteen persons present. 
Pror. J. J. STEVENSON read a paper, “On the Coals of 
the Kanawha Valley,” published in the Annals, Vol. X, No. 10. 
The subject of the Kanawha coals, and their relations to 
those of Pennsylvania and Ohio, was further discussed by 
Dr. R. P. Stevens and Prof. Stevenson. 
Pror. SEELY referred to some remarkably fine specimens 
of African copal which had lately come to his notice in the 
hands of importers. 
Pror. D. 8. MARTIN said that the whole subject of the copals 
is one of great interest. These resins seem to occur very 
widely and in large quantities, throughout many parts, not 
only of Africa, but of the Southern Hemisphere generally. 
They have as yet, however, received little or none of the 
study which they deserve. The only good account that he 
had ever met with, was that of Dr. Kirk, British consul at 
Zanzibar, from whose interesting statements in the Journal 
of the Linnzan Society of London, it appears that these 
copals are to a great extent true fossil resins, of middle post- 
tertiary age, what in this country we should call Champlain. 
Dr. Kirk finds three qualities of copal known in the trade at. 
Zanzibar: first, the fresh resin of Trachylobium Mossambi- 
cense, a tree which grows only upon the immediate sea-coast, 
