*54 Scale of Hgat. [Book IT. 



Iron juft red-hot by day. light _ T ^^ 



Iron juft red-hot in the dark _ Iooo 



Greateit heat of lead in fufion g 2O 



Colours of iron arc burned oft* - _ g oo 



Mercury boih, by fome placed at 600 700 



Polifhed iron takes \f\ill blue ^ oo 



Polifhed iron takes a purple . . 66 O 



Linfeed oil boils, by fome at 600 620 



Lead melts . 610 



Polifhed iron takes a ftraw colour 60^ 



Oil of vitriol boils 5^5 



Brafs takes a blue colour CQO 



Bifmuth melts AQ 



Tin- foil and bifmuth melt 450 



Tin melts 408 



Equal parts of tin and bifmuth melt * 283 



Equal parts of tin, lead, and bifmuth melt - 220 



Water boils 2iz 



Brandy boils 190 



Rectified fpirit of wine boils 175 



Serum of blood and white of eggs coagulate 156 



Bees-wax melts 142 



Grcateft heat of water which the hand can well bear 114 



Heat of the Sirocco wind at Palermo, in Sicily 112 



Violent feverifh heat -! 108 



Heat of the flcin of ducks, geefe, and pidgeons 106 



Heat of the fkin of cats, dogs, meep, &c. 103 



Heat of the human body in health 98 



Heat of a hive of bees 97 



Sultry weather 75 



Ordinary fummer heat -r- 65 



Water juft freezing, or ice juft melting 32 



Milk freezes 30 



Vinegar of ordinary ftrer.gth froze at 27 



Strong wines froze at 20 

 A mixture of fnow and fait finks the thermometer to o 



Greateft natural cold obferved in England 3 



Weafc fpirit of wine froze 33 



Mercury freezes about ^ 39 



As mercury contrcfts irregularly on freezing, no cold below this 

 can be obferved by the -thermometers now in ufe. 



