276 Contributions to Meteorology. 



extended was fully three and a half inches long, and two lines in 

 breadth. It was very flat with a deep groove down the middle 

 and transversely striated. The intestines, &c, were very small 

 and the worm was closely knotted and twisted together and inter- 

 mingled with them. 



(To be continued.) 



ARTICLE XX. — Contributions to Meteorology : from observa- 

 tions taken at St. Martin, Isle Jesus, Canadt East. By 

 Charles Smallwood, M.D., LL.D, Professor of Meteorology 

 in the University of McGill College, Montreal* 



The following observations extend over the year 1858: The 

 Geographical co-ordinaries of the Observatory are Latitude 45°32' , 

 North, and Longitude 7 3° 3 6', West, from Greenwich. The cistern 

 of the Barometer is 118 feet above the leved of the Sea, the Mean 

 results are obtained from tri-daily observations taken at 6 a.m., 

 2 p.m., and 10 p.m., and the whole of the observations have been 

 subjected to the usual corrections, depending on the constructions 

 of the instruments and for temperature. 



Barometic Pressure. — The highest reading of the Barometer 

 during the year, was at 10 p.m., on the 22nd of January, and 

 indicated 30.697 inches. The lowest reading for the same period 

 occured at 2 p.m., on the 21st of March, and was 29.021 inches, 

 givino- a yearly range of 1.676 inches. The greatest monthly 

 rano-e was in January, and this holds good for a series of years, 

 with the exception of last year, 1857, when December indicated 

 the greatest monthly range. June of the present year indicated 

 the lowest monthly range, 0.660 inches, although July for a series 

 of years has indicated the least monthly range. This year July 

 exceeded by 0.014 the lowest range of June. The mean baro- 

 metic pressure for the year was 29.829, which exceeds by 0.071 

 inches the mean of last year, and shows an increase in pressure 

 of the atmosphere compared with a series of years. The mean 

 height of the barometer for the month of January w T as 29.907 

 inches ; for February, 29,809; for March, 29.804; for April, 29.757; 

 for May, 29.751 inches ; for June, 29.771 inches; for July, 29.759 

 inches; for August, 29.789 inches; for September, 29.830 inches; 

 for October, 29.982 inches; for November, 29.779 inches; for 

 December, 30.015 inches. The mean monthly range of the baro- 



From the Canadian Journal for July, 1859. 



