CONTENTS. 



Tables for facilitating the Calculation of the Mean Time of the 

 Passage of Stars over the Meridian ; for the Use of those 

 •who observe by Clocks or Chronometers showing Mean Solar 

 Time. Computed by Mr. P. Lecount 428 



Meteorological Register kept at Wick, in the County of Caith- 

 ness, near the Northern Extremity of Scotland, for 1823 431 



On a Hydro-pneumatic Pump. By Mr. Sam. Seaward . 441 



Upon the System of Vegetable Physiology of M. Aubert du 

 Petit Thouars : in Reply to Sir Jas. Edw. Smith. By 

 J. Lindley, Esq. F.L.S. Sfc 456 



Notices respecting New Books 62, 143, 218, 304, 371, 457 

 Proceedings of Learned Societies . . 65, 147, 305, 374, 459 

 Intelligence and Miscellaneous Articles 67, 149, 229, 309, 383, 



467 



List of Patents 79,159,239,318,398,472 



Meteorological Tables . . . .80, 160, 240, 320, 400, 473 



PLATES. 



I. Hydro-pneumatic Pump for compressing Gases. 



II. Mr. Sturgeon's Electro-magnetic Rotating Apparatus ; and Mr. Hay- 



craft's Apparatus for ascertaining the Specific Heat of Gases. 

 III. Fossil Remains of two new Saurian Animals found in America: — 

 SauroccpJudus lanciformis, and Ichthyosaurus coniformis. 



ERRATA: 

 Page 65, line 9, for Solenhoffer, read Solenhoffen. 

 Page 66, line 16, for M. le Baron Blias, read M. le Baron Blin. 

 Page 67, line 10, for Mariand deRivero, read Mariano deRivero. 

 Page 249, line 8, for east to west, read west to east. 

 Page 297 in each of the Tables,/w 21, 22, 23, 24 Min., and 21, 22, 23, 

 24 Sec, read 30, 4(1, 50, 60 Min., and 30, 40, 50, 60 Sec. 



