t, ANIMALCULA OF INFUSIONS. 69 



The efFefts of cold to that degree too clear- 

 ly demonftrate, that it would be fatal to the hu- 

 man race, if unproteded againft it. I do not mean, 

 E 3 it 



exceeds this very lltde, it will defcend the fcale fome hun- 

 dred degrees. In an experiment, where the cold was only 

 a few degrees more than 40, the thermometer immedi- 

 ately fell to — 450° and 490^. — Cavendijlo^ Ohfcrvations on 

 Mr Hutchiti's Experiments, Philof. Tranfac. 1783, p. 23, 



The greateft cold that Acerbl obferved in his travels in 

 the north, was — 13^. Mackenzie experienced 16® ; but his 

 thermometer was then broken — Travels over the N. Con- 

 tinent of America. The greateft cold at Montreal in North 

 America was — iC. 18'^. — Philofophical Tranfuiiions. That 

 experienced by Captain Cartwright, on the coaft of Labra- 

 dor, — 25°. — 'Journal of a Reftdence on the Coafi of Labrador. 

 On the fame coaft, by M. de la Trobe, — 30°, — Philof. 

 Tranf. 1782, p. 198. The cold at Peterft)urgh and Mof- 

 cow has been from — 30" to 39°. — ABa Petropolitana, Nov. 

 ft Vet. var. loc. Mercury has froze at Prince of Wales 

 Fort, Hudfon's Bay, and Albany Fort — Philof Tranf 

 1793, p. 368. 1770. M. Patrin fuffered — 35° in Siberia; 

 and quickfilver froze. — Journal de Phyfique, 1791, p. 88. 

 But even thefe degrees have been far furpafled at Ouftioug 

 Velikoi, in the government of Vologhda, lat. 60"*. 50. 

 N. where the thermometer fell 83° below Zero, in De- 

 cember 1787 ; and, in January the fame year, fo low as 

 103°. 



The fenfations excited by fuch exceflzve cold are incon- 

 ceivable to us, who live in temperate climates. " I can- 

 " not exprefs the pain of refpiration at i^'^^^ exclaims M. 

 Patrin : " boiling oil feems to fill the lungs. Even in the 



" clofeft 



