CONTENTS. 
XV. Discussion of Meteorological Observations taken in India, at various heights, 
embracing those at Dodabetta on the Neelgherry Mountains, at 8640 feet above 
the level of the sea. By Lieutenant-Colonel W. H. Sykes, F.R.S. . page 29/ 
XVI. On the Pelorosaurus ; an undescribed gigantic terrestrial reptile whose remains 
are associated with those of the Iguanodon and other Saurians in the Strata of 
Tilgate Forest, in Sussex. By Gideon Algernon Mantell, Esq., LL.D., 
F.R.S. , F.L.S., Vice-President of the Geological Society, 8fc 379 
XVII. On a Dorsal dermal Spine of the Hylceosaurus, recently discovered in the Strata 
of Tilgate Forest. By Gideon Algernon Mantell, Esq., LL.D., F.R.S., 
F.L.S., Vice-President of the Geological Society, 8fc. . 391 
XVIII. Supplementary Observations on the Structure of Me Belemnite and Belemno- 
TEUTHis. By Gideon Algernon Mantell, Esq., LL.D., F.R.S., F.L.S., Vice- 
President of the Geological Society, 393 
XIX. On the Algebraic Expression of the number of Partitions of which a given number 
is susceptible. By Sir J. F. W. Herschel, Bart., K.H., F.R.S. . . . 399 
XX. Experiments on the Section of the Glossopharyngeal and Hypoglossal Nerves of 
the Frog, and observations of the alterations produced thereby in the Structure 
of their Primitive Fibres. By Augustus Waller, M.D. Communicated by 
Professor Owen, F.R.S 423 
XXI. Influence of Physical Agents on the development of the T'adpole of the Triton 
and the Frog. By John Higginbottom, Hon. Fellow of the Royal College of 
Surgeons of England. Communicated by Thomas Bell, Esq., Sec. R.S. . 431 
