CONTENTS. 



Art. I. Sketch of the Writings and Philosophical Cha- 

 racter of Augustin Pyramus Decandolle, Pro- 

 fessor of Natural History at the Academy of 

 Geneva, &c., &c. By Charles Daubeny, 

 M.D., F.R.S., &c.. Professor of Chemistry and 

 of Botany in the University of Oxford. Com- 

 municated to this Journal by the Author, . 197 

 Tabular View of the Cruciferse, distributed accord- 

 ing to their Cotyledons and Seed- Vessels, 224 



II. Observations on Subterranean Temperature in 

 the Mines of CornvFall and Devon. By W. J. 

 Henwood, C.E., F.R.S., F.G.S., &o., &c., &c., 246 



III. Summary of Results on the Fossil Animals of the 



Chalk Formation, still found in a living state. 



By Professor Ehrenberg of Berlin, . . 256 



IV. On a method of Registering the Force actually 



transmitted through a Driving-Beit. By Ed- 

 ward Sang, Esq., F. R. S. S.A., Professor of 

 Civil Engineering, College, Manchester. Com- 

 municated by the Royal Scottish Society of 

 Arts, ...... 261 



V. On the English Arc of the Meridian. By Wil- 

 liam Galbraith, Esq., M.A., Vice-President 

 of the Royal Scottish Society of Arts, F.R.A.S., 

 &c. Communicated by the Royal Scottish 

 Society of Arts, .... 263 



I. Of the Bases, ..... 265 



II. Trigonometrical Results, . . . 267 



III. General Remarks, .... 269 



Additional Note, . . . • 274 



