LOND. AND EDIN. PHILOSOPHICAL MAGAZINE, 1832 — 1838. 21 



rora borealis seen in low latitudes, xii. 

 42. 

 Emmett (Prof.) on the preparation of 



formic acid, xi. 399. 

 Enamel, art of painting in, x. 442. 

 Encke's comet, observations of, i. 287; 



V. 304. 

 Encke ( Prof.) on Olbers's method of de- 

 termining the orbits of comets, vii. 7, 

 123, 203, 280. 

 Enharmonic organ, vii. 366. 

 Entomological Society, v. 236 ; vii. 420. 

 Entomology : — a new genus of Melo- 

 lonthidse, vii. 224 ; a species of moth 

 found in the galls of a plant, vii. 224 j 

 new Hymenoptera, vii. 228 ; x. 440 ; 

 descriptions of new species of Diopsis, 

 vii. 519; compound eyes of insects, 

 viii. 202 ; on the yellow fly, viii. 347 ; 

 '* Samouelle's Useful Compendium," 

 viii. 412; undescribed species of Ara- 

 neidaD, viii. 481 ; x. 100; harvest-bug, 

 ix.l5; Aphrophora Goudoti, ix. 139; 

 lulus Seychellarum, Desj., ix. 140; re- 

 spiration of insects, ix. 532; voluntary 

 sounds of insects, x. 327 ; on the tempe- 

 rature of insects, xi. 189; on the sup- 

 posed production of insects, xi. 551; 

 oeconomy of several species of Hyme- 

 noptera, xii. 14; on the family of Ful- 

 goridae, xii. 93 ; Curtis's " Guide to 

 an Arrangement of British Insects," 

 xii. 202; several new species of in- 

 sects of the family of sacred beetles, 

 xii. 441. 

 Entozoa of the human subject, vii. 506; 



in the stomach of the tiger, xi. 128. 

 Entozoon, new species of, vi. 452. 

 Enys (J . S.) on the granite near Penryn, 



ii. 321, 483. 

 Equations, on the roots of, ii. 60, 220; 

 iii. 417; interesting case in, v. 188; 

 of the fifth degree, vii. 202; viii. 538 ; 

 ix. 28 ; xii. 116; numerical, vii. 384; 

 transformation of, vii. 478 ; congene- 

 ric surd, viii. 43 ; algebraic, viii. 402 ; 

 new method of solving, xi. 239. 

 Equilibrium of fluids, on, xii. 385. 

 Equinoctial gales, on, viii. 187. 

 Equivalents of potash, soda, and silver, 



on, xii. 324. 

 Erdmann (M.) on the oxalhydric acid of 



M. Guerin, xi. 142. 

 Eriogoneae, on the, vi. 379. 

 Escholzia californica, juice of, vi. 77. 

 Essex (Alfred) on the art of painting in 



enamel, x. 442. 

 Ethal, on, ix. 154. 



Ettrick (W.) on the solar eclipse of May 

 15, 1836, and on the aurora borealis of 

 April 22, ix. 73. 

 Eulima, notes on tliG genus, iv. 458. 



Euphorbiacese and Asclepiadea;, milk- 

 vessels of the, xi. 520. 



Eupion and paraflfin, on, i. 402. 



Europe, experiments made in, xi. 254 ; 

 on the diurnal inequality wave on the 

 coasts of, xi. 1 95. 



Evaporation, explanation of, ii. S54. 



Everitt (Thos,)on the reaction of ferro- 

 cyanuret of potassium and dilute sul- 

 phuric acid, and on preparing hydro- 

 cyanic acid from ferrocyanuret of po- 

 tassium and sulphuric acid, vi. 101 ; 

 oeconomical means of obtaining pure 

 salts of manganese, vi. 193. 



Exley (T.) on Mossotti's theory of phy- 

 sics, xi. 496. 



Expansion of solids^ new register-pyro- 

 meter for measuring, i. 197, 261. 



Eye, effect of compression and dilatation 

 on the retina of the, i. 89 ; on a new 

 membrane of the, i. 1 13 ; iii. 87 ; ex- 

 periments on the effect of light on the 

 retina, i. 255 ; on certain changes of 

 colour in the choroid coat of, iii. 289 ; 

 blood-vessels of the, iv. 115, 354; in- 

 fluence of successive impulses of light 

 on, iv. 241 ; vascular spectrum of the, 

 iv. 262 ; on the spectra of the, v. 1 92 ; 

 unusual affection of the, vi. 281 ; cu- 

 rious facts respecting vision, vi.409 ; of 

 the Sepia Loligo, viii. 1 ; crystalline 

 lens, viii. 193, 195, 416 ; symmetrizing 

 power of the, x. 234, 370 ; polarizing 

 structure in tlie crystalline lens after 

 death, xii. 22 ; on cataract, xii. 25. 



Eyes of animals, on the, iv. 14 ; com- 

 pound, of insects, viii. 202. 



FW. Optical experiment, viii. 

 • 168. 



Fairbairne (Mr.) on hot- and cold-blast 

 cast iron, xi. 556. 



Fairholrae (G.) on the spider's power to 

 escape from an isolated situation, i. 

 424 ; on a species of natural microme- 

 ter, &c., ii. 64 ; on the nature of coal, 

 and mode of deposition of coal strata, 

 iii. 245; on the Falls of Niagara, v.l 1. 



Falconer (Dr.) on the Sivatherium gi- 

 ganteum, ix. 193, 277; on a fossil 

 monkey from the tertiary strata of the 

 Sewalik hills, xi. 393 ; on additional 

 fossil species of Quadrumana from the 

 Sewalik hills, xii. 34. 



Fallows ( Rev. F. ), memoir of the, i. 234. 



Faraday ( Prof.) on M. Negro's magneto- 

 electric experiments, i. 45 ; on experi- 

 mental researches in electricity, i. 61 ; 

 iii. 38, 161, 253, 353, 449, 460; v. 

 161, 252, 334, 424, 456; vi. 34, 125, 

 171,272,334,410; vii.411; viii. 114; 

 xii. 206, S58, 426, 430, 538 ; on tht 



