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| The Physiological Action of Atropine, Digitaline, and Aconitine on the Heart and Blood-vessels of the Frog. By Frederic B. Nunnelev, M.D. Lond. | 46 |
| Fourth and concluding Supplementary Paper on the Calculation of the Numerical Value of Euler's Constant. By William Shanks | 49 |
| On the Refraction-Equivalents of the Elements. By J. H. Gladstone, Ph.D., F.R.S | 49 |
| On the Structure of the Cerebral Hemispheres. By W. H. Broadbent, M.D., Lecturer on Physiology at St. Marys Hospital Medical School, and Senior Assistant Physician to the Hospital, Physician to the Fever Hospital | 51 |
| On the Rhizopodal Fauna of the Deep Sea. By William B. Carpenter, M.D., V.P.R.S | 59 |
| Spectroscopic Observations of the Solar Prominences, being Extracts from a Letter addressed to Sir J. F. W. Herschel, Bart., F.R.S. , by Captain Herschel, R.E., dated 'Bangalore, June 12th and loth, 1869' | 62 |
No. 115. — June 17 (continued). | |
| Some Experiments with the Great Induction-Coil at the Royal Polytechnic. By John Henry Pepper, F.C.S., Assoc. Inst. C.E | 65 |
| 72 | |
Communications received after the Session. | |
| Spectroscopic Observations of the Sun. — No. V. By J. Norman Lockyer, Researches on Gaseous Spectra in relation to the Physical Constitution of the Sun, Stars, and Nebulae. — Third Note. By E. Frankland, F.R.S., and J. Norman Lockyer, F.R.S | 79 |
| On the Thermodynamic Theory of Waves of Finite Longitudinal Disturbance. By W. J. Macquorn Rankine, C.E., LL.D., F.R.SS. Lond. and Edin | 80 |
| Researches into the Constitution of the Opium Bases. — Part III. On the Action of Hydrochloric Acid on Codeia. By Augustus Matthiessen, F.R.S., Lecturer on Chemistry in St. Bartholomew's Hospital, and C. R. A. Wright, B.Sc | 83 |
| On the Action of Cyanogen on Anthranilic Acid. By P. Griess, F.R.S. | 89 |
| On the Successive Action of Sodium and Iodide of Ethyl on Acetic Ether. By J. Alfred Wanklyn, F.C.S. &c | 91 |
| On Approach caused by Vibration. By Frederick Guthrie | 93 |
November 18, 1869. | |
| List of Presents | 94 |
| Preliminary Report of the Scientific Exploration of the Deep Sea in H.M. Surveving- Vessel 'Porcupine ' during the Summer of 1869, conducted by Dr. Carpenter, V.P.R.S., Mr. J. Gwyn Jeffrevs, F.R.S., and Prof. Wyville Thomson, LL.D., F.R.S | 98 |
