384 



Canadian Record of Science. 



mation of the instruments may not meet, and the results 

 will be discordant. 



The heights due to the angles of altitude at both stations 

 are given in colums 3 and 4, and the mean of these quantities 

 in the last column. 



The small altitudes obtained for the cirrus clouds is espe- 

 cially worthy of notice. 



Date. 



May, 17 

 " 19 

 June, 3 

 3 

 May, 19 

 June, 3 

 June, 9 

 May, 18 

 June, 9 

 May, 19 

 June, 10 



Class. 



Cumulus 



Cumulo-Stratus 



Cirro-Cumulus 

 Cirro-Stratus . • 

 Cirrus 



Altitude in feet. 



Station (A) Station (B) Average 



1,160 



1,240 



7,400 



7,800 



9,960 



6,460 



5,260 



2,280 



11,600 



12,760 



12,080 



16,180 



13,620 



18,760 



18,400 



1,065 



1,460 



8,460 



7,280 



11.000 



6,400 



4,620 



1,340 



9,560 



13,800 



9,620 



16,960 



17,500 



19,320 



16,060 



1,112 



1,350 



7,930 



7,540 



10,480 



6,430 



4,940 



1,810 



10,580 



13,280 



10,850 



16,570 



14,560 



19,040 



17,230 



McGill College Observatory, 



Decemher 15th, 1886. 



Proceedings of the Natural History Society. 



The first meeting of the session was held on Monday 

 evening, November 29th, 1886, Sir J. ¥m. Dawson in the 

 chair. 



The minutes of the last annual meeting were read and 

 approved, and the minutes of the last Council meeting were 

 also submitted to the meeting. 



The Honorary Curator announced the following dona- 

 tions, viz. : — A young Harp Seal, from Rev. D. Y. Lucas, 

 and a Nest and Eggs of the American Eobin, from Dr. 

 Wanlass. 



The Chairman of the Library Committee reported the 



