300 ALLISON — NOVA SCOTIAN METEOROLOGY. 



better told by some one more competent to the task, but I have not 

 met with anything upon the subject of the sac and tubes except in 

 Camper's works. The notes of Dr. Sommers, which he kindly 

 handed to me to be used as I saw fit, are given in full, as those 

 which might have been made by me would only be the notes of a 

 hunter, and therefore of but little value in comparison. I regret 

 that I have been unable to explain more fully the use of the sac, 

 but what additional light has been added may possibly encourage 

 some other, naturalist or hunter, to continue the enquiry. 



Aet. VI. — Nova Scotian Meteorology. By F. Allison, Esq., 

 M. A., Chief Meteorological Agent. 



{Read before the Institute, \Ath May, 1877.) 



The facts, deductions, and opinions, brought before this Institute 

 in this little paper, are the results of over fourteen years of personal 

 observation at Halifax, of all elements entering into the consti- 

 tution of climate ; to which are added several previous years of 

 observation of Temperature and Rain by the Medical Officers at 

 the Citadel, which were taken under excellent supervision, and 

 considered to be trustworthy enough for scientific calculation. I 

 have also been much assisted by many careful observers through 

 this Province, and in Prince Edward Island, and Newfoundland, 

 to whom I would thus publicly tender my thanks ; and some of 

 whom are now performing good service in the Dominion Meteoro- 

 logical organization. Most of the following remarks, though taken 

 directly at and for Halifax, are applicable to all Nova Scotia. The 

 deviations from this general rule will be noted as we proceed. 



Heat — its degree and alternations — must of course lie at the 

 bottom of all considerations of climate ; but for several reasons of 

 convenience, the first instrument we record is the Barometer. 



Let me again mention, that beside almost all Barometers having 

 a considerable error in themselves, they are commonly observed by 

 the public without regard to the marking of the attached Ther- 



