390 METEOROLOGICAL OBSERVATIONS. 



such investigations, in this more elevated portion of the province ; and 

 having now completed one year's observations, I have prepared the 

 same for presentation to the Canadian Institute, hoping the information 

 they may afford will not be considered unworthy of its attention. 



The position of St. Mary's in the county of Perth, Canada West, 

 is in latitude 43° 17' 57". 6 north, and longitude 81° 13' 30" west of 

 Greenwich, and its elevation above Toronto (lake Ontario) is, by the 

 Grand Trunk Railway levels 833.41 feet, to which must be added 24 

 feet the elevation of my place of observation above the railway, making 

 855 feet above Toronto ; and allowing the Lake Ontario, to be 235 feet 

 above the level of the ocean, (the usual quantity allowed) this will give 

 St. Mary's a total elevation of 1090 feet above the ocean. It may be 

 well to remairk here that it is about 30 miles west of the highest ridge 

 levels of the province, which ridge runs from Berlin, county of Water- 

 loo, to Woodstock, county of Oxford, and the height of this ridge 

 may be counted about 150 feet above St. Mary's. 



The observations have been taken with the greatest care, and read 

 off and registered every morning at 8 a. m., which is given by Profes- 

 sor, Airy as the best mean time for barometric and thermometric data. 

 The quantity of rain fall or melted snow is taken in a large rain guage 

 of nearly one foot in diameter, and the direction of the wind is given 

 as the prevailing one of the preceeding 24 hours, as also the general 

 atmospheric appearance. 



To render the observations more interesting from St. Mary's, I have 

 added comparative tables taken from authentic sources, and my own 

 experience. Those from Toronto are from the published papers of the 

 Canadian Institute, and therefore perfectly reliable. I may here call 

 attention to the fact that Toronto is in north latitude 43° 39.4', and 

 west longitude 79° 23.2' , 



The observations in London (England) are from papers read before 

 the Royal Society, by the late professor Daniell, my respected che- 

 mical preceptor in King's College, London, and are received as the 

 best extant. 



The St. Petersburgh observations are taken out and reduced from 

 the Imperial Russian Almanac, published by authority of government, 

 and under the ablest professors of that capital. And, the Moscow tables 

 are from my own observations during several years' residence in that 

 jcity. 



The latitude of St. Petersburg is 59° 56' north and longitude 30® 



