ACTION OF HEAT. 



13 



T:z. 22. 



Jan. 1, 



Jan. 2. 



Jan. 31. 



Feb. 23. 



Feb. ^4. 



Bason. 



Therm , 



, Results. 





Hill top, 2S.710 







Obser rations 

 made on Rich. 



Thames side, 28.868 





Feet. 

 — 146 



Uiond- hiil. 



158 



doubtful. 



Hill top, 29,540 



44 







Thames side, 29-686 









146 





— 133 





Hill top, 29-708 



38 







Thames side, 29.86O 









152 





— 134 





Hill top, 29.301 



36 







Thames side, 29.453 



37 







152 





— 137 





Hill top, 29.758 



61 







Thames side, 29-912 









154. 





— 139 





Hill top, 30.180 



53 







Thames side, 30.334 



54 







154 



140 



IL 



Account of a Series of Experiments, shelving the Ejects of 

 Compression in modifying the Action of Heat. By Sia 

 James Hall, Bart. F. R. S. Edinburgh. 



(Continued from page 405, Vol. xiii,^ 



Experiments in which Water was employed to increase the 

 Elasticity of the included Air. — Cases of complete Com* 

 pression. — General Observations. — Some Experiments afford- 

 ing interesting Results; in particular, shewing a mutual 

 Action between Silex and the Carbonate of Lime. 



F 



INDING that such benefit arose from the increase ofelasti- Contrivance 



city given to the included air in the last-mentioned ^^P®^- g^f ""uantlT^ 



ments, of water was 



