74 NATURAL HISTORY SOCIETY OF MONTREAL. 



Ordinary Meeting, Oct. 24, 1862. 



After routine busiuess the following communications were then 

 read and discussed : — 



1. A letter from Prof. Hall on the limits of the Catskill Group of 

 New York, showing that a large proportion of the area, more 

 especially in Delaware county, hitherto supposed to be occupied 

 by the Catskill Group, really consists of rocks of the Portage and 

 Chemung Groups. 



2. A letter from Dr. Van Courtlandt, on the occurrence of das- 

 terosteous gymnetes, and of a supposed New Leuciscus in a lake- 

 tributary to the Ottawa. 



3. A paper by C. Robb, Esq., C.E., on the distribution of the 

 Superficial Deposits in C.W., and on some phenomena connected 

 with the Mineral Springs of that region ; more especially on the 

 fresh-water drift of Upper Canada, and on the local subsidences 

 and peculiar deposits on organic matters produced by some of the 

 Springs. 



4. Rev. A. F. Kemp made some remarks on the proposed use of 

 the Zostera marina as a substitute for cotton, and on the occur- 

 rence of this plant in Eastern America. 



Several papers we announced for nest and subsequent meet- 

 ings ; and recommendations of the Council in relation to the bet- 

 ter, arrangement and labelling of certain departments of the col- 

 lection, were reported by the Secretary, Mr. Leeming, and ad- 

 opted. 



A number of new members were proposed, and the meeting 

 adjourned. 



Ordinary Meeting, Nov, 24, 1S62. 



Principal Dawson, vice-President in the chair. 



L. H. Parkes, Esq., of Birmingham, England, Microseopist? 

 was unanimously elected a corresponding member ; and Col. Dun- 

 lop, R.A., Messrs. J. E. Pell, J. S. Millar, Alex. Cowan, and EL 

 G. Vennor were elected ordinary members. 



After the general business, the following papers were read ; 



1. On the habits of the pine-boring Beetles of the genus 

 Monohammus ; by E. Billings, Esq.. F.G.S. — After some general 

 remarks on the commercial value of our timber trees, and on the 

 numerous insects which attack them, the author noticed the spe- 

 cies of Monohammus known in North America, and gave a par- 

 ticular account of the habits of M. Confusor, with especial refe- 



