CONTENTS. 



Fossil Bones on the Coast of East Norfolk 132 



On the Origin and Discovei'y of Iron 161, 249 



Suggestions for simplifijing Mr. Ivory's Solution of the Double 

 Altilude'Prohlcm 167 



On the Bclation of Acids and Alkalis to vegetable Colours^ and 

 their Mutations thereby 170 



'Ne'jn Demonstrations of the Method invented by Budan, and 

 improved by others, of extracting the Roots of liquations 173 



On the Electrical Phcenomena exhibited in Vacuo . . . 179 



On M}\ John MooR^ Ju?iior's " Reply" 186 



On the Causes of a singular partial Failure in a Crop of Tur- 

 nips 187 



On the Stars forming the Pleiades 189 



Reply to Dr. Apjohn's " Additional Remarks," t5T. i7i The 

 Annals oiFhWohophy for September 1822 .... 193 



On simidtaneous Thunder-Storms 195 



Remarks respecting Astronomical Observatories . . . 197 

 A Letter to Professor Mii.lington, of the Roycd Insiitution, re- 

 specting some Frigori/ic Experiments made on the Magnetic 



Fluid, a7id on Sea-Water 199 



On Lithographic Printing 206 



Short Account of the Rocks in the Neighbourhood of St. Johfi's, 

 Newfoundland ,. 206 



Rejjly to Captain FoRMAi^^s Theory of the Tides . . . 211 



On the piroposed Alteration of Weights and Measures, and the 



Adaptation of Gaugi7ig Apparatus thereto .... 241 



On an Lnprovemcnt in the Apparatus for procuring Potassiuin 



247 

 On the Application of Magnetism as a Measure of Electricity 253 



On the Repeating Circle improved according to the Suggestion 

 of Baron Zach : and on taking Observations of the Polc- 

 Star 263 



Analysis of Air taken from an Ice-House 266 



A Defence of the new Theory of the Tides 267 



On reducing the Lunar Distance 271 



On some new Tables of Aberration and Nutation . . . 279 



DJs Second Reply to C. pn Mr. HEUArATn's Theory . 285 



On a nexv Sextant recently invented a7id constructed by Pro- 

 fessor Amici 301 



