CLIMATE of RUSSIA. ±i s 



of froft, fnow, rain, congelation, &c. as will be feen in the pa- 

 per, adding to the fhort note of the* Academy on each article, 

 a few remarks of my own, which I have collected during a long 

 refidence in the north. 



4-tbly, My calculations are all taken from the mean of fifteen 

 years, as will be feen by the annexed regifter, an abridgment 

 of that kept by ProfefTor Euler, perpetual Secretary to the Im- 

 perial Academy of Sciences, with which he obligingly fur- 

 nifhed me. 



I am happy to embrace this opportunity of acknowledging 

 a number of fimilar obligations for many years pad, from our 

 equally liberal and learned ProfefTors of the Imperial Academy 

 of Sciences. 



Lq/ily, I have added to the regifter the comparative degrees 

 of Fahrenheit and Reaumur's thermometers, that anfwer 

 to the given number of De Lisle's fcale, becaufe the firft is in 

 common ufe in Great Britain, and the fecond in Ruffia, as it 

 ought to be (and I believe generally is) with the public every 

 where from its greater fimplicity. 



The RUSSIAN WINTER, 

 With the common Phenomena attending it. 



The Ruffian winter certainly muft take the lead, when treat- 

 ing of the feafons, both from its duration and confequences in 

 this northern fituation. The duration of winter is generally 

 from the end of September to the beginning of May, although 

 we certainly have occasionally very pleafant weather in April, 

 in fpite of morning and evening froft, which the fun, in his 

 nearer approach, diffipates inftantly on appearing above the 

 horizon ; nay, the agreeable effect which a little of his ? fenfible 

 influence has, when contrafted with his little more than lunar 

 action for fo long a period, leads us to give to April almolt the 

 rank of a fummer month, although I doubt if, in a more 



fouthern 



