234 DISSERTATION on the 



Two Letters on Electrical and other Phenomena ; 

 addrejfed to Dr Ma t.thew Guthrie, Con/. Aid. F. R. SS. 

 Lond. and Edin. Phyfwian to the Imperial Corps of Noble 

 Cadets , and to that of the Artillery and Engineers in St Peterfburg, 

 by his Excellency M. JEriNUS* 



\*Tranflation from the French.'] 



Dear Si r, 



I acknowledge the pleafure I have received in perilling 

 your paper on the Northern Climate ; and certainly it would 

 be difficult to give, with more method and intelligence, a clear 

 and diftinct idea of the peculiarities of our climate, quod malus 

 Jupiter urget, and which diftinguifh it from the other countries 

 of Europe, placed under a more mild and temperate fky. 



I shall therefore comply with pleafure, in giving a circum- 

 ftantial account of the curious facts mentioned in your DifXer- 

 tation, as feen and authenticated by me ; and (hall, at the 

 fame time, avail myfelf of your permiflion to communicate 

 the remarks and reflections I have made on reading your inter- 

 efting DifTertation *. 



The uncommon phenomena alluded to in your paper, were 

 as follow: During the laft weeks of the year 1766 and the 

 firft of 1767, we had conftantly very ftrong froft, with the 



calm, 



* Dr Guthrie folicited the learned gentleman's remarks and opinion on his paper. 

 M. .fliPiNus is the oldeft Profeflbr of the Imperial Academy now alive, having fpent 

 upwards of thirty years in this country j and as Natural Philofophy was his profeffional 

 line before called to Court, and his amufement fince, his Excellency is of all others molt 

 able to judge of the peculiarities of our climate, and the fitteft to put the itamp of 

 veracity on this Diflertation ; its principal merit. 



