teorological observations made at
Alton, 229.
Syria, Northern, account of a line of levels across, 57.
Tahiti, tide observations at, 440.
, general remarks on the tides at, 440.
Talbot (H. F.), the Royal medal av\'arded to, for his researches in the integral calculus, 101.
on the art of photogenic drawing, 120.
, account of the processes employed in photogenic drawing, 124.
on a new kind of sensitive paper, 134.
on improvements in photography,
312.
, the Rumford medal, awarded
to, 422.
Tate (W.) on ftictorial expressions and the summation of algebraic series, 456.
Taylor's theorem, new demonstration of, 456.
Teeth, on the structure of the, 70. Telerythrine, chemical examination of, 233.
Telescope, reflecting, experiments on
the, 238 ; method of forming a large
speculum of several castings, 239. , construction and use of single
achromatic eye-pieces for, 195. Temperature, diurnal, of the earth's
surface, 377, 444. Terrestrial magnetism, 212, 221, 287,
369, 465, 468. Tetanus, on the human muscular fibre
affected by, 301. Thames, on the rise and fall of the tide
in the river, 330. Thermo-electi'icitv, on the phenomena
of, 215.
Thermometer, hourly observations at sea of the, 239.
, the Royal Society's, on the position of, 3.
and Barometer, Coggan's, 72.
Thermometrical observations at Cape Palmas, 331.
Thin plates, phenomena of, of solid and fluid substances exposed to po- larized light, 302.
Thomas (S. H.), meteorological obser- vations at Alten in Finmarken, 195, 229.
Thomson (W. T.), account of a line of levels across Northern Syria, from the ^lediterranean sea to the river Euphrates, 57.
Thoracic duct, chemical analysis of the contents of, 373.
Tiarks (Dr.), notice of the late, 12.
Tide-guage, new, 53.
Tide observations, method of discus- sing those of Bristol, 73, 243.
at Petropaulofsk 217; at Sitkhoe,
217; at Prince of Wales's Island, 311 ; at Singapore, 311 ; at Tahiti, 440.
— — phenomenon, questions respect- ing, 73.
Tides, deduction of the laws of, from
short observations, 72.
, low water, on the laM's of, at Plymouth, 152.
at Southampton and at Ipswich, 445.
in the Thames, on the rise and fall of, 330.
, register of, at Coringa, 330.
, researches on, 72, 152, 217, 242.
, simultaneous observations, 8.
, the high-water mark at Waterloo Bridge and at London Bridge, 3, 22.
Timber, strength of pillars of, 228. Tin, on the reduction of, 447.
Tomes (John) on the structure of the teeth, 70.
Toronto, meteorological observations made at, 295, 380.
Torpedo, observations on the, 291.
To3'nbee (J.) on the non-vascularity and peculiar uniform mode of orga- nization and nutrition of certain animal tissues, viz. articular carti- lage, and the cartilage of different classes of fibro-cartilage ; the cor- nea, the crystalline lens, and the vitreous humour; and the epider- moid appendages, 306, 308.
Transverse force of electric currents, 56.
Trevandrum, magnetic and meteoro- logical observations at, 396. Tribasic salts, 102.
Tunica granulosa, a granulous tunic of mammalia not hitherto described, 75.
Tunica vaginalis oculi, on the, 311. Turner (Edw., M.D.), notice of the late, 13.
Turtles, fossil remains of, in the chalk
