CATALOGUE. — NATURE OF HEAT. 



41S 



A furnace for smelting iron. Rees cyclop. 



II. PI. 



Revolving apparatus for distilling. Rees cy- 

 clop. II. PI. Art. Chemistry. 



Hornblower on sweeping chimnies by a blast. 

 Nich. VII. 246. 



A mode of heating boilers at Meux's brewery. 

 Ph. M. XVII. 275. 



Aikin's portable blast furnace. Ph. M. 

 XVII. 166. 



Accum's chemical lamp. Nich. VIII. 2l6. 



Greenough on Melograni's blowpipe. Nich. 

 IX. 25, 143. 



Curaudau's evaporating furnace. Nich. IX. 

 204. 



An improved maltkiln. Ph. M. XX. 71. 



A good freezing mixture is muriate of lime i, water l ; 

 or nitrate of ammonia 1, water 1 ; or muriate of ammonia 

 i, nitrate of potash 5, water IS. Alcohol and snow pro- 

 duce great cold. 



Extinction of Heat. 



Bertholon on extinguishing fires. M, Laus. 



III. 1. 



Van Marum's portable pump for extinguish- 

 ing fires. Repert. ii. III. 46 1. Nich. 8. V. 

 103. 



Nature of Heat. 

 Homberg. A. P. 1700. H. 11. 



Mentions some efTects of motion analogouj to thoje of 

 heat, fixing a vessel-to the clapper of a mill. 

 Lomonosow on the cause of heat and cold. 

 N. C. Petr. I. 206. 



Supposes heat to consist in motion. 

 Whitehurst on the weight of ignited sub- 

 stances. Ph.tr. 1776.575. 

 Euler on the nature of the air. A. Petr. III. 

 i. 162. 



Supposes the particle* of air to revolve within vesicles 

 of water with a velocity of 2150 feet in a second, at 

 412°; that this velocity varies as the square root of the 

 exp&Bsive force, becoming 1790 at 100° of Delitle's ther- 



mometer, 1330 at 200". This variation is however some 

 what too great. 



Cavendish. Ph. tr. 1783. 312. 



Thinks Sir Isaac Newton's opinion of heat much the 

 most probable. 

 Achard's comparison of heat and electricity. 



Roz. XXII. 245. 

 Achard on the tendency of heat to ascend. 



A. Berl. 1788. 3. Printed 1793. 



The experiments are not conclusive. 

 Fordyce on the loss of weight in heated bo- 

 dies. Ph. tr. 1785. 361. 



Probably the effect of an ascending current of air. 

 Fordyce's experiment on heat. Ph. tr. 1 787. 



310. 



Is persuaded that heat is a quality and not a substance. 

 Rome de I'isle and Marivetz on the matter 



of heat. Roz. XXXII. 63, 71. 

 Henry on the increase of weight in heated 



bodies. Manch. M. III. 174. 



Explains it from oxidation. 

 Henry on the materiality of heat. Manch. 



M. V. 603. Ph. M. XV. 45. Nich. 8. HI. 



197. 



Thinks that the heat excited by friction may be borrowed 

 from without. But to borrow heat from another body is to 

 be colder than that body, and to cool it. // ^\ i^ - i ""' 'TJ ^N. 



Reynieron the nature of fire. Roz. XXXVI*,: ^^iVy'^,. ^-T! 



94. 



Beddoes. Ph. tr. 1791. 173. 



Observes, that heat and flame are produced by oxyge» 

 already fixed, in the manufacture of iron. 



*Pictet Essais de physique. 8. 



The tendency to ascend, which he attributes to heat, 

 may perhaps be partly understood from the great compa- 

 rative capacity for heat of air highly rarefied. 



*Prevost sur I'equilibre du feu. 8. Genev. 



Roz. XXXVIII. 314. 

 Young's remarks on the manufacture of 



iron. Gentl. Mag. 1792. 

 T.Wedgwood. Ph.tr. 1792.270. 



Air not visible made a wire red hot. 

 Dize on heat as the cause of shining. Journ. 



Phys. XLIX. 177. Gilb, IV. 410. 



