I CONTENTS. 



On Ambergris, Dr. Neuinan , 



On the same, by ditto 



On M. Seba's Museum, Middleton , 



661 

 663 

 667 



Va%e 



On Ambergris, Dr. Neuman 668 



On the same. Dr. Mortimer ibid 



4. Geography and Topography. 



On Levelling, Dr. Desaguliers 49 



Longitude of Lisbon, Fa. Carbotie 55 



Figure of the Earth, Desaguliers 6l 



Longitude of Lisbon, J. Bradley 141 



Latitude of Lisbon, Fa. Carbone 143 



Eartliquake at Dartford, E. Barrel 195 



SubteiTaneous Fire in Kent. Dr. Nesbitt . . ibid 



Longitude by Meteors, Geo. Lynn 207 



On Finland, Peter Kinck 210 



Paris and London, Peter Daval 228 



Measurement of Hills, J. G. Scheuchzer. . 265 



Height of Mountains, by ditto 282 



Peak of Derbyshire, J. Martyn 331 



Kingdom of Tunis, Tho. Shaw 364 



History of Russia, G. F. Muller 6I8 



5, Hydrology. 



Freezing Water, Fahrenheit 22 



Universal Deluge, Dr. Halley 33 



On the same, by ditto 35 



Ebbing and Flowing Ponds, Desaguliers . . 39 



Currents at the Straits, Hudson 56 



High Tide in the Thames, Jones 133 



On Tides, H. de Saumarez ibid 



Depth of the Sea, Desaguliers 275 



The Holt Waters, Rev. J. Lewis 338 



Well near Queeuborough, CoUinson 368 



New Hydrometer, Mr. Clarke 392 



Class IF. Chemical Philosophy. 



1 . Chemistry. 



On Prussian Blue, Dr. Woodward 



On the same, John Brown 



Proving French Brandy, Neuman . 

 Fixed Alkaline Salts, C. Neuman 



4 Salt Works in Hungary, Bruckman 386 



6 Ethereal Spirit of Wine, Frobenius 394 



120 On the same, and Phosphor, of Urine, do. 594 



128 On Phosphorus of Urine, Hanckewitz 596 



On the same, by ditto 132 Fire Damp in Coal-mines, Sir Ja. Lowlher 6l2 



1. Meteorology. 



Aurora Borealis at Upsal, Burrman 54 



Effects of Lightning, Jos. Wasse 104 



The Aurora Borealis, Arthur Dobs 155 



On the same. Dr. Langwith 157 



On the same at Plymouth, Dr. Huxham . . J 58 



On the same at Exeter, Dr. Hallet ibid 



On the same, by John Hadley 159 



The same at Geneva, Calandrini 159 



On tlie same. Dr. Derham 183 



On the same, by Geo. Lynn 185 



The same for 4 years, Wm. Rastrick 185 



Four Parhelia or Mock Suns, Geo. Whiston 186 



On the Lumen Boreale, Dr. Langwith ... 1 94 



On the same seen at Liverpool 194 



History of Meteors, Isa. Greenwood .... 224 



Aurora Borealis, Oct. 19, 1726 238 



Vapours, Clouds and Rain, Desaguliers . . 323 



Aurora Borealis, Dr. Derham 351 



The Ignis Fatuus, by ditto 374 



Meteorol. Observat. J. F. Weidler 384 



Aurora Borealis, G. Cramer 393 



Effects of Thunder, &c. Evan Davies 437 



The Frost in Jan. 1731, Dr. Derham 448 



Aurora Borealis, Is. Greenwood 463 



The same at Annapolis, Rd. Lewis 464 



On the Weather, &c. Capt. Middleton 466 



Freezing of Water, M. Triewald ibid 



Meteorology at Padua, S. Poleni 509 



Meteorological Diaries, Dr. Derham 530 



Meteorolog. Ephemer. Murchenbroek .... 565 



On the same, by ditto 571 



Meteor. Observ. at Petersburg, Consett .. 61I 



Nat. Hist, of the Air, Dr. Cyrillus 629 



Mairan's Treatise on the Aurora Borealis 



J. Fames 637 



Aurora Borealis, J. F. Weidler 644 



