THE PHILOSOPHICAL MAGAZINE AND ANNALS, 1827—1832. 41 



Schmidt (Dr. E.) on the dimensions of 

 the earth, vii. 409. 



Schultes (Prof.) on the cultivation of 

 botany in England, vi. 351, 428. 



Schweigger-Seidel (Dr.) on the blue co- 

 louring-matter of lapis lazuli and on 

 artificial ultramarine, vii. 244. 



Scientific Bodies of London, calendar of 

 the Meetings of, for 1827-28, ii. 400; 

 for 1828-29, iv. 400 ; for 1829-30, vi. 

 400. 



Scoresby (Rev. W.) on the determina- 

 tion of the thickness of solid sub- 

 stances, not otherwise measurable, by 

 magnetic deviations, x. 295. 



Screens, W. S. Harris on the influence of, 

 in arresting the progress of magnetic 

 action, x. 297. 



Screws, Mr. Bevan on the adhesion of, 

 ii. 291. 



Scrope (G. Poulett) on the rippled 

 markings in the forest marble beds, ix. 

 376. 



on the excavating power of rivers, 



vii. 210; Prof. Sedgwick's opinion 

 on, vii. 293. 



Sea, luminous appearance of, ix. 144. 



, pressure of, iv. 36, 119; v. 371. 



Sea-salt, arsenic in, viii. 387. 



Sea water, quantity of bromine in, iii. 

 145. 



Seal, on the anatomy of the, xi. 136. 



Secondary and tertiary formations of 

 Germany, Mr. Murchison 's sketch of 

 the principal, x. 45. 



rocks of Bassano, Mr. Murchison 



on, v. 401. 



Seconds pendulum, Capt. Sabine's ex- 

 periments on the length of the, x. 

 294. 



Sedgwick (Prof.), addresses on the an- 

 niversaries of the Geological Society, 

 vii. 289; ix. 271. 



on sections of the carboniferous 



chain between Penigent and Kirkby 

 Stephen, ix. 377. 



on the deposits over the carboni- 

 ferous series in the valley of the Eden, 

 xi. 283. 



on the lake mountains of the North 



of England, ix. 211. 



on the tertiary deposits of the 



vale of Gosau, vii. 48, 50. 



on the tertiary deposits of Lower 



Styria, vii. 358. 



, remarks on Mr. Lyell's " Princi- 

 ples of Geology," ix. 303. 



Sedgwick (Prof.) and R. I. Murchison 

 on the structure of the Austrian Alps, 

 viii. 81. 



Seefeld, bituminous schist and fossil fish 

 of, vi. 36. 



Seer's (J.) method of solving adfected 

 quadratic equations, iv. 125. 



Sefstrom (M.) on vanadium, a new me- 

 tal, x. 151. 



Seidlitz powders, i. 146. 



Selenium, bromide of, iii. 147. 



— — , minerals containing, iv. 113. 



, separation of, from sulphur, ii. 



390. 



Seleniuret of aluminum, iv. 150. 



Sepia, fossil, v. 388. 



Sepice, certain habitudes of, Mr. Slight 

 on, iii. 153. 



Series, on the summation 7 of, xi. 339,435. 



Serullas (M.) on bromide of carbon, vi. 

 313. 



on bromide of selenium, iii. 147. 



on bromine, i. 395. 



on perchloric acid, x. 314. 



on the oxichlorates, x. 394. 



on sodium, vi. 149. 



Sextant, Hadley's, vi. 84, 181. 



Shad and whitebait, on the identity of, 

 vi. 253. 



Shamrock of Ireland, on the plant in- 

 tended by the, vii. 289. 



Sharpe (D.) on a new species of Ich- 

 thyosaurus, vii. 458. 



on the figure of the earth, iv. 443. 



on the figure of the cells of the 



honeycomb, iv. 19. 



account of some optical experi- 

 ments, vii. 281. 



on the reduction to the meridian, 



ix. 270. 



on the solid of greatest attraction, 



viii. 256. 



table of the sun's semidiameter, 



xi. 259. 



on the tide-like wave of Lake On- 

 tario, ix. 117. 



on the vitrified fort of Dunnoch- 



goil, iv. 123. 



Sheep's bones, analysis of, vi. 393. 



Shell, a percussion, Lieut.-Col. Miller on, 

 iii. 358. 



Shells, monograph of the species of Cy- 

 clas and Pisidium, xi. 69. 



, fossil, vi. 149, 232; M. B. de 



Basterot's observations on, ii. 102. 

 (See Fossils, Geology, and Organic 



Remains.) 



