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CONTENTS.
VOL. XX.
No. 130.— November 16, 1871.
| Page | |
| Considerations on the Abrupt Change at Boiling or Condensing in reference to the Continuity of the Fluid State of Matter. By Professor James Thomson, LL.D | 1 |
| Contributions to the History of the Opium Alkaloids. — Part III. By C. R. A. Wright, D.Sc, Lecturer on Chemistry in St. Mary's Hospital Medical School | 8 |
| On a Periodic Change of the Elements of the Force of Terrestrial Magnetism discovered by Professor Hornstein | 21 |
| Corrections to the Computed Lengths of Waves of Light published in the Philosophical Transactions of the year 1868. By George Biddell Airy, C.B., Astronomer Royal | 21 |
| Corrections and Additions to the Memoir on the Theory of Reciprocal Surfaces, Phil. Trans, vol. clix. (1869). By Prof. Cayley, F.R.S | 22 |
November 23, 1871. | |
| Second Paper on the Numerical Values of e, log e 2, log e 3, log e 5, and log 6 10 also on the Numerical Value of M, the Modulus of the Common System of Logarithms, all to 205 decimals. By William Shanks, Houghton-le-Spring, Durham | 27 |
| Second Paper on the Numerical Value of Euler's Constant, and on the Summation of the Harmonic Series employed in obtaining such Value. By William Shanks, Houghton-le-Spring, Durham | 29 |
| An Experimental Determination of the Velocity of Sound. By E. J. Stone, M.A., F.R.S., Astronomer Royal at the Cape of Good Hope | 34 |
