770 
INDEX. 
ScHUNCK (Edward, F.R.S.). On Rubian, and its Products of Decomposition, 433. 
Scoparine, 422. Properties of, 430. 
Sparteine, and its compounds, 425 et seq. Properties of, 430. 
Spermatozoa, on the agency of, in impregnation, 203. 
Spinal Chord, researches into the structure of, 607. Of the grey substance of, 608. Nature 
and arrangement of its fibi’es, 609. Changes in its form, 611. Nerve-vesiclps of the chord, 
614. Its white columns, 615. Origin of the spinal nerves, 616. Nerve-tubes of the 
chord, 618. 
Stars favourably situated for the investigation of Parallax, results of observations on, 333. 
Stenhouse (John Ph.D., F.R.S.). On the Action of Nitric Acid on various Vegetables, with a 
particular examination of Spartium scoparium, or Common Broom, 413. 
Storms, magnetic, 77. 
Sugar, as a product of rubian, 456. 
Survey, magnetic, of the Eastern Archipelago, 287. 
T. 
Terrestrial Physics, Researches in. Part I., 495. Part II., 511. 
Thomson (William, M.A., F.R.S.E.). On a Mathematical Theory of Magnetism. Part I., 
243-269. 
Tidal streams of the English Channel and German Ocean, Report upon, 703. Method of making 
the observations, ibid. Oceanic and Channel streams — mixed tides, 704. Extent of the 
Channel streams — meeting of the streams, 705. Motion of their limiting lines — peculiarity of 
the Dover stream, ibid. Steadiness of the stream in the Channel — on a nearly simultaneous 
motion of the stream, 706. Retardation of turn of the stream near the coast of Holland — its 
cause, 707. Time of slack water in the Channel compared with time of high water, Dover, 
708. Rotary motion of the water in the mixed tides — 'erroneous opinions respecting it, 709. 
The time of tide at which the stream attains its maximum speed, 710. Direction in which 
the stream turns, 712. Tide and half-tide, ibid. Formation of a combined wave in tbe Strait 
of Dover, 713. Influence of the combined wave over the stream of the Channel — tidal 
streams of the Irish Sea similarly influenced, 714. Explanation of the mechanical action of 
the water by which the streams of the Channel are produced, 715. Results of inquiry, 716. 
Tide and half-tide, 712. 
Toronto and Hobarton, magnetic disturbances at, 123. 
Toynbee (Joseph, F.R.S.). On the Structure of the Membrana Tympani of the Human Ear, 
159. Appendix, 167. 
Triethylamine, action of bromide and iodide of ethyl upon, 358. Action of iodide of methyl 
upon, 372. Action of iodide of amyl upon, 373. 
Triethylammonium, oxide of, 362. Reaction of, with metallic oxides, 363. Double salts of, 367. 
Tunicata, anatomy and physiology of genera of, 595. 
V. 
Vegetables, on the action of nitric acid upon, 413. 
Verantine, one of the products of decomposition of rubian, 449. 
Vertebras, on the exogenous processes of, 719. 
