650 



GENERAL INDEX. 



Deposits, tertiary, divided zoologically into 

 three groups, 12; elevation of, 13; on the 

 errors which may arise in computing their 

 relative age by the percentage test, 235. 



Dictamnus albus, supposed electrical proper- 

 ties, 241. 



Didelphida?, characters of, 525. 



Divergence in vegetables, letter from Golding 

 Bird on, 181. 



Diary of a Naturalist, extracts from, 157. 



Dog, remarks upon the organ of time in, 53. 



Dreissena cyanea. See Mytilus polym6rphus. 



Dromedary, birth of one at the gardens of the 

 Zoological Society, 548. 



Duck, changes in plumage, 262. 



Dumfriesshire snake, existence, as distinct from 

 the common viper, doubted, 187. 



Eagle, instance of its choosing an inaccessible 

 spot to build in, 119; nest of in Loch Skene, 

 443. 



Electric currents in vegetable structures, 240. 



Electrical phenomenon, 220. 



Elephant, anecdote of the recapture of a tame 

 individual, 8; fossil remains of, 125. 



Endosmosis, explanation of the term, 59. 



Epizooty, its effect, 134. 



Exosmosis, explanation of the term, 59. 



Falco cy£neus. See Ring-tailed Glede. 



Farringdon, sponge-bed noticed, 237. 



F6dia carinata, locality for, 439. 



Felis chin^nsis, inconsplcua, pulchella, orn£ta, 

 described, 577. 



Felspar, experiments upon the fusion of, 147. 



Fieldfares breeding in Scotland, 339. 



Fox, instances of its feigning death, 5 ; ob- 

 servations on the natural habits of, 509. 



Fringillidae, description of a new form belong- 

 ing to, 535. 



Geese, wild, protected in Loch Naver, 120. 



Geosaurus, description of, 290. 



Germination, on the electric currents de- 

 veloped in, 243 ; physiological and chemical 

 changes proper to, 293. 



Gibbon. See Apes. 



Gironde, basin of, 14. 



Gliridae, characters of, 525. 



Gnathodon figured and described 376. 



Golunda Ellibti ; Melt^da, described, 586. 



Goldfish, manner of taking their food, 46. 



Granite, experiment upon the fusion of, 

 147. 



Gravel, character of, in Norfolk and Suffolk, 

 145. 



Greenshanks, changes of plumage in, 479. 



Greenstone, experiments upon the fusion of, 147. 



Grouse, black, plentiful in Selkirkshire, 119. 



Grouse, red, on the habits of, as observed in 

 Selkirkshire, 120. 



Gryllotalpa, found in New Holland, 142. 



Guillemot, plumage of, 477. 



Gypsum, deposition going forward in the island 

 of Ascension, 277. 



Halmaturus albus, Derbianus, dorsalis, Eu- 

 genii, Parryi, ualabatus, described, 583. 



Hapalophus cubla described, 489. 



Hare taking water, 279. 



Helix nemoralis, remarks upon the different 

 coloured bands of the shell, 530 ; observations 

 on the genus, 484 ; virgata, occurrence in vast 

 numbers near Norwich, 223. 



Hemiramphus, record of a species captured on 

 the Suffolk coast, 505 ; described and figured, 

 507. 



H^nicus Stollii figured and described, 144. 



Herpestes Benn6ttii, brachyurus, nepal£nsis, 

 Smithii, described, 578. 



Heteronemia, remark upon the genus, 144. 



Hipp&rchia, rarity of the larvae belonging to 

 that genus noticed, 19. 



Hippopotamus, premium offered for a living 



>• specimen by the Zoological Society, 333. 



Honey buzzard, observations on, 537; habits 

 of a tame individual, 538. 



Hornblende, experiments upon the fusion of, 

 147. 



House-sparrow, fact relating to the habits of, 



168. 

 Hybridism, remarks on, 81. 358. 

 Hyeres, description of its position, and general 



character of the place, 194 ; botany of, 193 ; 



orangeries of described, 194 ; islands of, 196 ; 



insects collected there, 198. 

 Hypsipry"mnus minor described, 584. 

 Ichthyosaurus, description of, 342. 

 Icones Plantarum, notice respecting the co- 

 louring the plates, 385. 

 Idiocy, existence of, in sheep and poultry, 139. 

 Iguanodon, description of, 341. 

 Ignis fatuus, remarks on its origin, 548. 551,552; 



supposition that it is an insect, 3 3. 

 Impatiens Balsamina, irritability in the valves 



of the seed-vessel, 58. 61. 

 Infant instinctively takes the breast, 3. 

 Instinct, definition of, 1. 

 Irritability shown in the stems of many plants 



when divided, 57; attempt to explain it by 



physical causes, 58. 62. 

 Jackdaw, changes of plumage, 301. 

 Jack-o'-lantern. See Ignis fatuus. 

 Jersey, notices of rare plants collected there, 25 ; 



general character of the island, 26. 

 Kangaroo, description of the membranes of a 



foetus, 481. 

 Kingfisher, manner of taking its food, 48. 

 Kent, degradation of the coast noticed, 123; 



action of the tides upon, 124. 

 Lacerta Neptunia, description of, 29?. 

 Lagdpus saliceti, changes in the plumage of, 262. 

 Lamium album, experiments upon the irrita- 

 bility of, 59 ; intermedium, locality for, 439. 

 Laniadae, remarks upon, 487. 

 Lanius Collurio, changes of plumage, 300. 

 Larks, plumage often varying according to the 



soil, 135. 

 Larus argentatus, changes of plumage, ' 

 Leggada Booduga described, 586. . ( 



Lemuridae, characters of, 525. 

 Lepidosaurus, description of, 291. 

 Leptonyx Weddellii described, 582. 

 Ldpus californicus, Douglasii, longicaud^tus, 



described, 586. 

 Leucdjum vernum, observation upon, 447. 

 Lima, observations on its mode of progression, 



23; description of the animal, 24; queries 



respecting its affinities, 24. 

 Linnets, female, assuming the male plumage, 



480. 

 Lithodomus dactylus, manner of procuring it 



in the harbour of Malta, 23. 

 Lizard, notice of an undescribed variety, 189. 

 Locusta monstrdsa. See Anostoma Herbstii. 

 Loxia cuvirostra. See Crossbill. 

 Luminous appearance at Birmingham, 222. 

 Lunar hornet sphinx. See Trochiliumcrabroni- 



formis. 

 Lutra calif6rnica, chincnsis, fndica, described, 



580. 

 Lutraria figured and described, 374. 

 Macropus major Shaw, described, 582. 

 Macrospondylus, description of, 291. 

 Mactrada*, arrangement of the family, 335. 

 Mactra figured and described, 371. 

 Madrepora Caryophfllia, on the habits of, 475. 

 Mailed gurnard captured off* Plymouth, 17. 

 Malaconbtus noticed, 488. 

 Mallard, mode of changing plumage, 260. 

 Mammalia, fossil remains of, noticed on the 



Kentish Coast, 122. 

 Man, comparison of his intellectual powers with 



those of animals, 78. 

 Manticora latip£nnis described and figured, 



503. 

 Marputius, description of the genus, 581. 

 Mastodonsaurus, description of, 291. 

 Megalosafirus, description of, 341. 

 Mephitis mexicana, varians, described, 581. 

 Mermaid, description of a supposed specimen, 



110. 

 Meteors, observations upon, 151. 

 Meteorological error, 448 ; retrospect, 153 ; 



