The American Naturalist, Volumul 11Essex Institute, 1877 |
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Pagina 14
... marked manner the marsupials which inhabit Australia and Tasmania , to the exclusion of higher forms of life , were pre- ceded by animals of the same structure , but greatly exceeding in size the kangaroo and the wombat of to - day ...
... marked manner the marsupials which inhabit Australia and Tasmania , to the exclusion of higher forms of life , were pre- ceded by animals of the same structure , but greatly exceeding in size the kangaroo and the wombat of to - day ...
Pagina 50
... marked . Their longer slope and greater width make a prom- inent feature in the topography of Ithaca . Noting in addition the depth at which the water flows , and the small number of cascades and water- falls , the conclusion is at once ...
... marked . Their longer slope and greater width make a prom- inent feature in the topography of Ithaca . Noting in addition the depth at which the water flows , and the small number of cascades and water- falls , the conclusion is at once ...
Pagina 51
... marked valleys of Six Mile Creek and the Cayuga Inlet , with their sloping banks and knolls and terraces . These deep , - - well - worn valleys are undoubtedly the result of glacial action . The mass of ice which filled the Cayuga Lake ...
... marked valleys of Six Mile Creek and the Cayuga Inlet , with their sloping banks and knolls and terraces . These deep , - - well - worn valleys are undoubtedly the result of glacial action . The mass of ice which filled the Cayuga Lake ...
Pagina 61
... marked disfigurement during life . The condition of this skull was contrasted with that of one in which all the teeth were in good condition , symmetrical in their arrangement , and illustrating in a marked degree the harmony of ...
... marked disfigurement during life . The condition of this skull was contrasted with that of one in which all the teeth were in good condition , symmetrical in their arrangement , and illustrating in a marked degree the harmony of ...
Pagina 79
... a broken cañon country , extremely dry . It was marked on the maps as a high undulating plateau , with fresh - water lakes and timber . The party saw no lakes of more than four hundred 1877. ] 79 Explorations in Colorado .
... a broken cañon country , extremely dry . It was marked on the maps as a high undulating plateau , with fresh - water lakes and timber . The party saw no lakes of more than four hundred 1877. ] 79 Explorations in Colorado .
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Termeni și expresii frecvente
abundant Algæ American ancient animals antennæ appear archæology Arctic birds bones butterflies cañons cells character coast color Colorado contain Coryphodon Cretaceous Crustacea deposits distribution domestic turkey east eggs ELLIOTT COUES Eocene exhibited existence exploration fact fauna feet female Figure fishes flora flowers formation fossil genera genus Geographical geological geologist glacial habits hundred imaginal discs inches Indians insects interesting Island Key West Killingworth Lake land larvæ Lepidoptera living locust male mammals mass microscope migrations miles Miocene Mountains Museum NATURALIST northern O. C. Marsh object observed organs origin paper peculiar period plants plates Pliocene portion present probably Prof Professor recent region River rocks sand scientific seen sepals shells side Society species specimens stone structure surface Survey Tertiary theory tion trees tribes uniformitarian valley vegetation W. H. Dall
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Pagina 219 - I do not wish to particularise, but I dare say many of you, seeking knowledge, or in the laudable desire to employ a holiday usefully, have visited some great natural history museum. You have walked through a quarter of a mile of animals, more or less well stuffed, with their long names written out underneath them; and, unless your experience is very different from that of most people, the upshot of it all is that you leave that splendid pile with sore feet, a bad headache, and a general idea that...
Pagina 276 - The people are somewhat white, they wear apparel, and lie in beds, their weapons are bows, they have emeralds and other jewels, although they esteem none so much ,as turquoises, wherewith they adorn the walls of the porches of their houses, and their apparel and vessels, and they use them instead of money through all the country.
Pagina 467 - I look at the geological record as a history of the world imperfectly kept, and written in a changing dialect; of this history we possess the last volume alone, relating only to two or three countries. Of this volume, only here and there a short chapter has been preserved ; and of each page, only here and there a few lines.
Pagina 214 - In an Englishman's mouth it generally means that by which we get pudding or praise, or both. I have no doubt that is one meaning of the word utility, but it by no means includes all I mean by utility. I think that knowledge of every kind is useful in proportion as it tends to give people right ideas, which are essential to the foundation of right practice, and to remove wrong ideas, which are the no less essential foundations and fertile mothers of every description of error in practice. And inasmuch...
Pagina 719 - Darwin as to the display of color and ornaments by the male birds, there is a total absence of any evidence that the females admire or even notice this display. The hen, the turkey, and the pea-fowl, go on feeding while the male is displaying his finery, and there is reason to believe that it is his persistency and energy rather than his beauty which wins the day.
Pagina 715 - ... colour-variations either to one sex only or to both sexes ; the difference depending on some unknown law, and not being due to natural selection. I have long held this portion of Mr. Darwin's theory to be erroneous ; and have argued that the primary cause of sexual diversity of colour was the need of protection, repressing in the female those bright colours which are normally produced in both sexes by general laws ; and I have attempted to explain many of the more difficult cases on this principle....
Pagina 9 - After much consideration, and with assuredly no bias against Mr. Darwin's views, it is our clear conviction that, as the evidence stands, it is not absolutely proven that a group of animals, having all the characters exhibited by species in Nature, has ever been originated by selection, whether artificial or natural.
Pagina 446 - The International Exhibition to be held at Paris in 1878 will furnish such an occasion, and it is proposed to invite to that end governmental geological surveys, learned societies and private individuals throughout the world, to send to Paris such collections as will make the geological department of that exhibition as complete as possible. In order to take advantage of the collections which may thus be brought together, it is moreover proposed to convoke an International...
Pagina 467 - ... circumstances, and the blank intervals between the successive stages as having been of vast duration. But we shall be able to gauge with some security the duration of these intervals by a comparison of the preceding and succeeding organic forms. We must be cautious in attempting to correlate as strictly contemporaneous two formations, which include few identical species, by the general succession of their forms of life.
Pagina 114 - The Rocky Mountain locust or grasshopper, being the report of proceedings of a conference of the Governors of several Western States and Territories, together with several other gentlemen, held at Omaha, Nebr., on the 25th and 26th days of October, 1876, to consider the locust problem ; also a summary of the best means now known for counteracting the evil.