444 



Storer (Dr. J.) on an ebbing and flow- 

 ing stream discovered by boring in 

 the harbour of Bridlington, ii. 6. 



Stream, an ebbing and flowing, ii. 6. 



Sublimate, corrosive, on, ii. 173. 



Sugar from starch, ii. 105. 



, examination of, ii. 325. 



Sulphate of magnesia, on the manufac- 

 ture of at Monte della Guardia, ii.48. 



Sulpho-naphthalic acid, on, ii. 265. 



Sulphovinates, on, ii. 272. 



Sulphovinic acid, ii. 350. 



Sulphur, examination of, i. 320. 



and phosphorus, on some com- 

 binations of, i. 440. 



Sulphuret : triple, of lead, antimony, 

 and copper, i. 134 ; analysis of, i. 

 138, 284 ; of copper, on the different 

 kinds of, i. 137 ; of iron, remarks 

 on, i. 155 ; compound, from Huel 

 Boys, composition of, i. 284; of car- 

 bon, production of cold by the eva- 

 poration of, i. 473. 



Sulphuretted chyazic acid, ii. 21. 



Sulphuric acid and alcohol, on the 

 mutual action of, ii. 271, 350. 



Summer solstice, 1812, Mr. Pond's 

 observation of, i. 443. 



Sun : method of viewing with tele- 

 scopes of large apertures, i. 21 ; re- 

 frangibility of the invisible rays of, 

 i. 22 ; on the causes or symptoms 

 of its variable emission of light and 

 heat, i. 49, 55 ; on the motion of the, 

 i. 197; on the discordances between 

 the observed and computed right 

 ascensions of, ii. 285, 305 ; method 

 of comparing the light of with that 

 of the fixed stars, ii. 355 ; its light 

 compared with Sirius, with a candle, 

 with the moon, ii. 355. 



Sun's rays, the black rete mucosum 

 of the negro a defence against the 

 scorching effect of, ii. 135. 



Suspension bridges, mathematical the- 

 ory of, ii. 269. 



Swallow of Java, on the nests of the, 

 ii. 77. 



T. 



Tabasheer, on the optical and physical 

 properties of, ii. 115. 



Tadpole : on the formation of fat in 

 the intestine of, ii. 49 ; on the 

 changes the ovum of the frog under- 

 goes during its formation, ii. 227. 



Tan artificially produced, i. 193, 205, 



220. 



Tannin, on an artificial substance pos- 

 sessing the properties of, i. 190, 

 205, 220. 



Tanning, on the operation of astrin- 

 gent vegetables in, i. 114. 

 Tantalium and columbium, on the 



identity of, i. 336. 



Tapir of Sumatra, account of the ske- 

 leton of the, ii. 147. 

 Teeth of the Delphinus gangeticus, 



description of, ii. 99. 

 Telescopes : on the power of penetra- 

 ting into space by, i. 5 ; of large 

 apertures, method of viewing the 

 sun with, i. 21 ; experiments with 

 to determine very small angles, i. 

 1 66 ; achromatic, on the construc- 

 tion of with a fluid concave lens, 

 ii. 333, 345 ; on computing the ra- 

 dii of curvature for achromatic ob- 

 ject-glasses, ii. 316; Cassegrainian, 

 compared with the Gregorian, i. 

 468, 493 ; refracting, constructed 

 with a fluid concave lens of 7'8 

 inches aperture, ii. 356 ; zenith, 

 method of applying the vertical float- 

 ing collimator to, ii. 342. 

 Tellurium, i. 351. 



Temperature, determination of the 

 higher degrees of by means of a new 

 register -pyrometer, ii. 331, 404 ; 

 correction for its variations with the 

 invariable pendulum, ii. 404. 

 Temperatures, high, on the measure- 

 ment of, ii. 331. 

 Tendrils of plants, on the motions of, 



i. 434. 



Tennant (S.) on the composition of 

 emery, i. 94 ; on two metals found 

 in the black powder after the solu- 

 tion of platina, i. 161 ; on pro- 

 ducing a double distillation by the 

 same heat, i. 513; mode of procu- 

 ring potassium, i. 513. 

 Teredo, shell of the sea-worm proved 



to belong to a species of, i. 234. 

 Teredo gigantea, on the shell of, i. 234. 

 Teredo navalis, anatomy of the, i. 234. 

 Thales, on the solar eclipse said to 



have been predicted by, i. 400. 

 Thames water, on the spontaneous 



purification of, ii. 376. 

 Thermometer, differential, on a new 

 form of the, ii. 309. 



