CONTENTS 
I. On the Laws of the Rise and Fall of the Tide in the River' Thames. By G. B. 
Airy, Esq., M.A., F.R.S., Astronomer Royal page 1 
II. Contributions to Terrestrial Magnetism. — No. III. By Lieut. -Colonel Edward 
Sabine, R.A., F.R.S 9 
III. Researches in Physical Geology. — Third Series. By W. Hopkins, Esq., M.A., 
F.R.S. , F.R.A.S., F.G.S., and of the Cambridge Philosophical Society . 43 
IV. On the Structure and Use of the Malpighian Bodies of the Kidney, with Observa- 
tions on the Circulation through that Gland. By W. Bowman, F.R.S., Assistant 
Surgeon to the King's College Hospital, and Demonstrator of Anatomy in King's 
College, London 5 7 
V. On the Chemical Analysis of the Contents of the Thoracic Duct in the Human Sub- 
ject. By G. Owen Rees, M.D., F.G.S., Physician to the Northern Dispensary . 
Communicated by P. M. Roget, M.D., Sec. R.S., tyc. . 81 
VI. Report of a remarkable appearance of the Aurora Borealis below the Clouds. By 
the Rev. James Farquharson, LL.D., F.R.S., Minister of the Parish of 
Alford, Aberdeenshire 87 
VII. On Fibre. By Martin Barry, M.D., F.R.SS. L. and E 
89 
