vi CONTENTS. 



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and 1853. By John Fletcher Miller, Ph. D., F.R.S., Fellow of 

 the Royal Astronomical Society, Associate of the Institution of 

 Civil Engineers, Member of the British Meteorological Society, 

 Corresponding Member of the Literary and Philosophical Society of 

 Manchester, &c, . . . . . . .81 



IX. On the Dynamical Theory of Heat. Part V. Thermo- Electric Cur- 

 rents. By William Thomson, M.A., Professor of Natural Philoso- 

 phy in the University of Glasgow, . . . .123 



X. An Investigation into the Structure of the Torbanehill Mineral, and of 



various kinds of Coal. By John Hughes Bennett, M.D., F.R.S.E., 

 Professor of Physiology in the University of Edinburgh. (With 

 Two Plates.) . . . . . . .173 



XI. On certain Vegetable Organisms found in Coal from Fordel. By John 



Hutton Balfour, M.D., F.L.S., Professor of Medicine and Botany 



in the University of Edinburgh, . . . . .187 



XII. Researches on some of the Crystalline Constituents of Opium. Second 

 Series. By Thomas Anderson, M.D., Regius Professor of Chemis- 

 try in the University of Glasgow, . . . . .195 



XIII. On the Products of the Destructive Distillation of Animal Substances. 

 Part III. By Thomas Anderson, M.D., Regius Professor of Che- 

 mistry in the University of Glasgow, . . . .219 



PART II. (1854-5.) 



XIV. Further Experiments and Remarks on the Measurement of Heights by 

 the Boiling Point of Water. By James D. Forbes, D.C.L., F.R.S., 

 Sec. R.S.Ed., &c, Professor of Natural Philosophy in the Univer- 

 sity of Edinburgh. (With a Plate.) . . . .235 



XV. Some Miscellaneous Remarks on the Salmonido3. By John Davy, M.D., 



F.R.S. Lond. & Edin., Inspector-General of Army Hospitals, . 245 



