The Annals and Magazine of Natural History: Zoology, Botany, and Geology, 第 15 卷Taylor & Francis, Limited, 1845 |
內容
| 1 | |
| 11 | |
| 19 | |
| 30 | |
| 38 | |
| 45 | |
| 67 | |
| 73 | |
| 277 | |
| 293 | |
| 301 | |
| 305 | |
| 322 | |
| 331 | |
| 342 | |
| 346 | |
| 104 | |
| 112 | |
| 119 | |
| 140 | |
| 149 | |
| 161 | |
| 171 | |
| 174 | |
| 190 | |
| 212 | |
| 221 | |
| 242 | |
| 250 | |
| 255 | |
| 261 | |
| 270 | |
| 371 | |
| 376 | |
| 377 | |
| 383 | |
| 387 | |
| 401 | |
| 408 | |
| 415 | |
| 422 | |
| 444 | |
| 449 | |
| 475 | |
| 489 | |
| 499 | |
| 541 | |
其他版本 - 查看全部
常見字詞
albá albida anfractibus animal antennæ anticè apex appearance Arca belong body brevi British brown calm canali cells characters Cloudy coast cocoon colour columellá concentricè Conch convex convexiusculo costis coxæ Cuming declivi dentibus described distinct dorsali elevatis elytra end view extremity fathoms female fibres flowers fossil Fronds frost genera genus Icon inch insect intus Island joint labello labro lævi larvæ lateralibus latter legs length ligamento lines longitudinaliter low water male mammæ margine ventrali membrane minute Mitr Mitra moulted nearly observed organs outer ovary ovatá ovules palpus papillæ peculiar Pedicellina Philippines found plants plates poll Polyp portion posterior posticè present racter Ranella remarkable rotundato Sandwick Schönh Segestria senoculata shell side species specimens spiders spirá Steph striæ striis structure supernè surface tail tarsi TELLINA testá thorax tibiæ transverse transversim Triopa Triton utrinque valdè varicibus vegetation whorls
熱門章節
第 11 頁 - And God said, Let the earth bring forth grass, the herb yielding seed, and the fruit tree yielding fruit after his kind, whose seed is in itself, upon the earth: and it was so. And the earth brought forth grass, and herb yielding seed after his kind, and the tree yielding fruit, whose seed was in itself, after his kind: and God saw that it was good.
第 341 頁 - Plan of Publication. — The work will appear in about Twelve Parts, to be published at intervals of four months ; each Part containing from Twelve to Fifteen folio Plates. The descriptive Letterpress will be printed in royal octavo. Price of each Part, One Guinea. — Part I. contains PROBOSCIDEA.
第 239 頁 - This product multiplied by twentyfour, the mean number of circumvolutions described by the elastic spiral line, gives 3,360, the mean number of globules contained between two radii ; which, multiplied by twenty-six, the mean number of radii, produces 87,360, the total number of viscid globules in a finished net of average dimensions. A large net, fourteen or sixteen inches in diameter, will be found by a similar calculation to contain upwards of 120,000 viscid globules, and yet Epeira apoclisa will...
第 225 頁 - ... will present themselves to the eye of the observer, not as regards proportion alone, but organization also, even among nearly allied species. As the full development of the palpi and the organs of generation connected with them indicates a state of maturity in male spiders, the skilful arachnologist is enabled, by attending to this circumstance, not only to distinguish adult males from females, but likewise from immature individuals of both sexes. This knowledge is useful in preventing him from...
第 214 頁 - Extract of a Letter from Prof. Bailey to JL Smith. — "Charleston is built upon a bed of animalcules several hundred feet in thickness, every cubic inch of which is filled with myriads of perfectly preserved microscopic shells.
第 114 頁 - The whole forms a rubbing surface, which being applied closely to the bottom of the cavity by the adhesion of the foot, enables the animal to rub down, and so penetrate shale, chalk, wood, or even the hardest limestones and marble. Saxicava rugosa is also furnished with a rasping surface covered with siliceous particles. This surface, however, in this species is formed entirely of the anterior portion of the mantle, the margins of which being united are much thickened, forming a sort of cushion capable...
第 241 頁 - As a preparatory measure, the spinning mammulse are brought into close contact, and viscid matter is emitted from the papillae ; they are then separated by a lateral motion, which extends the viscid matter into fine filaments connecting the papillae ; on these filaments the current impinges, drawing them out to a length which is regulated by the will of the animal ; and on the mammulae being again brought together the filaments coalesce and form a compound line.
第 241 頁 - ... prove unavailing in a still atmosphere. However, should the individuals thus insulated be exposed to a current of air either naturally or artificially produced, they immediately turn the abdomen in the direction of the breeze, and emit from the spinners a little of their •viscid secretion, which being carried out in a line by the current becomes connected with some object in the vicinity, and affords them the means of regaining their liberty. If due precaution be used in conducting this experiment,...
第 114 頁 - Pholas and Teredo is formed of the anterior portion of the animal in the surface of which are imbedded siliceous particles. The particles penetrating the skin give to it much the character of rasping-paper. The whole forms a rubbing surface, which being applied closely to the bottom of the cavity by the adhesion of the foot, enables the animal to rub down, and so penetrate shale, chalk, wood, or even the hardest limestones and marble. Saxicava rvgosa is also furnished with a rasping surface covered...
第 56 頁 - Himalayah chain. They were found associated with the remains of four extinct species of Mastodon and Elephant, species of Rhinoceros, Hippopotamus, Horse, Anoplotherium, Camel, Giraffe, Sivatherium, and a vast number of other Mammalia, including four or five species of Quadrumana. The Sewalik fauna included also a great number of reptilian forms, such as crocodiles and land and freshwater tortoises. Some of the crocodiles belong to extinct species, but others appear to be absolutely identical with...