CONTENTS 
XII. Contributions to Terrestrial Magnetism. — No. IX. By Lieut. -Colon el Edward 
Sabine, R.A., For. Sec. R.S page 173 
XIII. Contributions to the Chemistry of the Urine. — Paper III. Part I. On the Va- 
riations of the Acidity of the Urine in the state of Health. Part II. On the 
simultaneous Variations of the amount of Uric Acid, and the Acidity of the 
Urine in the state of Health. Part III. On the Fariations of the Sulphates in 
the state of Health, and on the infuence of Sulphuric Acid, Sulphur and Sul- 
phates, on the amount of Sulphates in the Urine. By Henry Bence Jones, 
M.D., M.A. Cantab. F.R.S., Physician to St. George's Hospital . . . 235 
XIV. Appendix to a paper on the Variations of the Acidity of the Urine in the state 
of Health. By Henry Bence Jones, M.D., 31. A. Cantab., F.R.S., Physician 
to St. George's Hospital 261 
XV. Additional Observations on the Osteology of the Iguanodon and Hylceosaurus. 
By Gideon Algernon Mantell, Esq., LL.D., F.R.S., F.L.S., Vice-President 
of the Geological Society, 8§c 271 
XVI. On the Reduction of the Thermometrical Observations made at the Apartments of 
the Royal Society, from the years 1774 to 1781, and from the years 1787 to 1843. 
By James Glaisher, Esq., F.R.S., of the Royal Observatory, Greenwich. Com- 
municated by John Lee, Esq., LL.D., F.R.S. ^c 307 
XVII. On the Meteorology of the Lake District of Cumberland and Westmoreland ; 
including the results of Experiments on the full of Rain at various heights, up to 
3166 feet above the sea level. By John Fletcher Miller, Esq., F.R.A.S. 
Communicated by Lieut. -Col. Sabine, For. Sec. R.S 319 
XVIII. Description of an Infusory Animalcule allied to the Genus Notommata of 
Ehrenberg, hitherto undescribed. By John Dalrymple, F.R.C.S. Commu- 
nicated by Thomas Bell, Sec. R.S 331 
XIX. On the Motion of Gases. — Part II. By Thomas Graham, Esq., F.R.S. , F.C.S., 
Professorof Chemistry in University College, London ; Hon. Fellow of the Royal 
Society of Edinburgh ; Corresponding Member of the Institute of France, of the 
Royal Academies of Sciences of Berlin and Munich, of the National Institute of 
Washington, 8^c 349 
