494 



INDEX. 



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 draw- 



ing, 120. 



, account of the processes em- 

 ployed 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 po- 

 sition 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 atWaterloo 



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 



