CONTENTS. 



and Meteorites during the Year 1823 ; including an Ac- 

 count of the principal Phenomena of that Nature observed 

 during the same Period : "with Inquiries suggested by those Sub- 

 jects. By E. W. Bkayley, junior, A.L.S., and Member of 

 the Meteorological Society 111,287 



On Mr. Samuel Seaward's Claim to the Invention of a Hydro- 

 pneumatic Pump for compressing Gases, fyc. By Mr. John 

 Martineau 129 



An Attempt to explain the Action of the Voltaic Pile. By 

 Mr. Thomas Pollock 129 



Of Scmi-decussation of the Optic Nerves. By William Hyde 

 * Wollaston, M.D. V.P.R.S. 134 



Observations on the Heights of Places in the Trigonometrical 

 Survey of Great Britain, and. upon the Latitude of Arbury 

 Hill. ByB. Bevan,^ 140 



Remarks on the Experiments of the Pendulum made by Captain 

 Kater, M. Biot, $c. By William Galbraith, Esq. A.M. 



161 



On the Velocity of Sound : and on the Encke Planet. By 

 Mr. John Farey 178 



Observations on the Twelfth Book of Euclid. By J. Walsh, 

 Esq 181 



Decas novarum Plantarum Sueculentarum; A Decade of New 

 Succulent Plants. By A. H. Haworth, Esq. F.L.S. fyc. 184, 

 Decas Secunda . . . 298, Decas Tertia . . . 42 J 



Some Remarks on the supposed Influence of the Pollen in Cross- 

 breeding, upon the Colour of the Seed-coats of Plants, and 

 the Qualities of their Fruits. By Thomas Andrew Knight, 

 Esq. F.R.S., <$fc. President of the Horticultural Society 191 



Observations on the Effects of Age upon Fruit Trees of different 

 Kinds,- with an Account of some new Varieties of Necta- 

 rines. By Thomas Andrew Knight, Esq. F.R.S. fyc. 

 Pres. of the Hort. Soc 194 



On the complete Solution of certain Functional Equatio?is. By 

 John Herapath, Esq 197 



On the Specif c Heat of the Gases. By W. T. Haycraft, 

 Esq 200, 262 



On Comparative Barometric and Pluviametric Observations ,■ in 

 Reply to Mr. Squire. By W. Burney, LL.D. . . 208 



On finding the exact Mean Solar Time. By Mr. Samuel 

 Cooper 210 



Sketch of the Geographical Distribution of Plants in Yorkshire. 

 By J. Atkinson, Esq. F.L.S. fyc. Leeds . . . . 211 



On the Theories of Vegetation of Sir J. E. Smith and M. du 

 Petit Thouars. By Sir James Edward Smith, President 

 (if the Linncean Society 241 



