11 CONTENTS. 



9. On Mechanical Antecedents of Motion, Heat, and Light. 



By William Thomson, Esq., Professor of Natural 

 Philosophy, University of Glasgow. Communicated 

 to the British Association, Section A, Monday, Sept. 

 28, 1854. [Author's Abstract], . . 90 



10. Further Observations on Glacial Phenomena in Scotland 



and the North of England. By B. Chambers, 

 F.B.S.E., 97 



11. On the Great Terrace of Erosion in Scotland, and its Be- 



lative Date and Connection with Glacial Phenomena. 



By B. Chambers, F.B.S.E., . . .103 



12. Geological Survey of Great Britain, . . 106 



13. On the Action of Organic Acids on Cotton and Flax 



Fibres. By F. Crace Calvert, F.C S., M.B.A. of 

 Turin, Professor of Chemistry, Boyal Institution, 

 Manchester, . . . . .108 



14. On a Hermaphrodite and Fissiparous Species of Tubico- 



lar Annelid. By Thomas A. Huxley, F.B.S., Lec- 

 turer on General Natural History in the Government 

 School of Mines, . . . .113 



15. On the Artificial Preparation of Sea Water for the Aqua- 



rium. By George Wilson, M.D., F.B.S.E., Lecturer 



on Chemistry, . . . . .129 



16. Notice of the late Professor Edward Forbes, . 133 



17. Introductory Lecture delivered at the opening of the Na- 



tural History Class in the University of Edinburgh, 

 on Wednesday, 1st November 1854. By the late 

 Edward Forbes, F.B.S., F.G.S., Begius Professor of 

 Natural History, . . . .145 



