CON T E N T S 

 OF THE SIXTIETH VOLUME. 



]FuBTHER Observations on Dr. Reade's Papers onHefraction 



5 



An Account of the Repeating Circle, and of the Altitude and 

 Azimuth Instrument 8, 102 



On the Hypothesis of Gaseous Repidsion 18 



On the Solar Eclipse vohich took place on September 7> 1820 25 



Account of a successful Experime^it to prevent the injuriotis 



Effects resulting from the Diffusion of arsenical Vapours from 



Copper-smelting Furnaces 32 



On the Connexion between the Leaves and Fruit of Vegetables, 

 Sfc 38 



Fw'ther Remarks on the new Method of determining the Lati- 

 tude of a Place, by Observations of the Pole-Star . . 43 



True aj)parent Right Ascension of Dr. Maskelyne's 36 Stars 

 f(/r evety Day in the Year 1822, at the Time of passing the 

 Meridian of Greenwich 49, 93 



On the Pollen of Flowers \ 56 



On the Heat produced by Chlorine, and on a singidar Effect 

 produced by Lightning 61 



A Reply to M?-. John Murray, "on the Apparatus for restor- 

 ing the Action of the Ltmgs iti apparent Death " . , 62 



On the Chemical Composition of white efflorescent Pyrites 6.5 



On the Hygrojneter by Evaporation 81 



On a new Theory of the Tides 88 



On Chlcnine and Chlorate of Potassa 100 



Jteport of a Committee of the House of Commons on Steam-Boats ; 

 being the Fifth Report on the Roads from London to Holy- 

 hcad,Sfc ■ 113,257 



Vol. 60. 1822, ii 



