POOLE ON METEOROLOGY. 285 



Western district cannot be considered as settled, but the agreement 

 in thickness of the overlying seams, and the slight difference in the 

 estimated thickness of intervening strata, are strong evidences that 

 the existence of the lower seams will be proved over all the Pictou 

 Coal Fields. 



Art. VIII. On the Meteorology of Caledonia Mines, 

 Little Glace Bay, Cape Breton. By H. Poole, Esq., 

 M. E. 



(Read March 10, 1873.) 



The accompanying record of meteorological phenomena observed 

 at the Caledonia Mines dm^ing the year 1872, does not vary much 

 from that of 1871. The barometrical and thermometrical readings 

 are closely approximate, but the relative humidity, 82*46, (saturation 

 being 100,) was greater than in the previous five years, which is to 

 be accounted for by the largely increased amount of precipitation in 

 rain and snow ; amounting to 74-955 ins., against a mean of 58*898 

 inches for the previous five years. The measured snow-fall was 

 173*35 inches, but the exact quantities of water contained in it could 

 not be correctly measured apart from the rains ; as sudden changes 

 in the temperature often prevented them from being recorded sepa- 

 rately. 



The number of days on which the wind blew from S. to W. was 

 151 ; from W. to N. Q^ ; from N. to E. 100 ; and from E. to S. 

 49 ; shewing a larger increase of winds from S. to W., and N. to E. 

 than in previous years. Forty-seven gales were observed, in which 

 the Anemometer recorded velocities exceeding thirty-five miles an 

 hour; March, November, and December being the most stormy 

 months ; while in September there was only one high wind to record 

 on the 19th. continuing from 7 a. m. to 1 p. m., but which must 

 have been much more severe seaward, as vessels passing on the 21st 

 from the southward carried double reefed topsails. 



On the 3rd. of January, ice made in the outer bay of Glace Bay ; 

 and on the 7th drift ice was passing to the south. There was a 

 gale on the 7th which sprung up in the afternoon from W. by S. 



