Contributions to the Theory of Natural Selection: A Series of EssaysMacmillan and Company, 1870 - 384 من الصفحات |
من داخل الكتاب
النتائج 1-5 من 72
الصفحة 32
... Exactly the same laws will apply to mammals . Wild cats are prolific and have few enemies ; why then are they never as abundant as rabbits ? The only in- telligible answer is , that their supply of food is more precarious . It appears ...
... Exactly the same laws will apply to mammals . Wild cats are prolific and have few enemies ; why then are they never as abundant as rabbits ? The only in- telligible answer is , that their supply of food is more precarious . It appears ...
الصفحة 42
... exactly like that of the centrifugal governor of the steam engine , which checks and corrects any irregularities almost before they become evident ; and in like manner no unbalanced deficiency in the animal king- dom can ever reach any ...
... exactly like that of the centrifugal governor of the steam engine , which checks and corrects any irregularities almost before they become evident ; and in like manner no unbalanced deficiency in the animal king- dom can ever reach any ...
الصفحة 48
... Exactly the same thing has occurred with pigeons ; and in the case of rats and mice , the white variety has not been shown to be at all dependent on alteration of climate , food , or other external conditions . In many cases the wings ...
... Exactly the same thing has occurred with pigeons ; and in the case of rats and mice , the white variety has not been shown to be at all dependent on alteration of climate , food , or other external conditions . In many cases the wings ...
الصفحة 51
... exactly harmonizes with the lichen - coloured stones among which it delights to sit , that a person may walk through a flock of them without seeing a single bird ; while in winter its white plumage is an almost equal protection . The ...
... exactly harmonizes with the lichen - coloured stones among which it delights to sit , that a person may walk through a flock of them without seeing a single bird ; while in winter its white plumage is an almost equal protection . The ...
الصفحة 54
... exactly to resemble them , and as long as it remains quiet would certainly escape detection . Some of the geckos which cling motionless on the trunks of trees in the tropics , are of such curiously marbled colours as to match exactly ...
... exactly to resemble them , and as long as it remains quiet would certainly escape detection . Some of the geckos which cling motionless on the trunks of trees in the tropics , are of such curiously marbled colours as to match exactly ...
طبعات أخرى - عرض جميع المقتطفات
عبارات ومصطلحات مألوفة
abundant action adapted alike Amboyna animals antennæ appear beautiful become bees beetles birds Borneo brain brilliant build butterflies caterpillars causes Celebes changes character closely allied species colour concealed conspicuous Crown 8vo curious Darwin Diphilus distinct Edition eggs essay evidence exactly existence external extinct Extra fcap facts faculties favourable Fcap flowers genera genus geological groups Guinea habits Heliconidæ imitation India individuals inhabiting insects instinct islands Java larvæ Lepidoptera less Malayan male Mimeta mimic mimicry mode modified Moluccas moths natural selection nectary nest never nidification number of species observations occur organic Origin of Species Ormenus Pammon Papilio Papilio Ulysses Papilionidæ peculiar perfect period phenomena POEMS Polydorus possess present probably produced protection race regions remarkable render resemble savage sexes sexual sexual selection shown structure Sumatra tail theory of natural Theseus tints tion trees tropical variation varied varieties whole wings
مقاطع مشهورة
الصفحة 38 - THE GOLDEN TREASURY OF THE BEST SONGS AND LYRICAL POEMS IN THE ENGLISH LANGUAGE. Selected and arranged, with Notes, by FRANCIS TURNER PALGRAVE.
الصفحة 41 - The Song Book. Words and Tunes from the best Poets and Musicians. Selected and arranged by JOHN HULLAH, Professor of Vocal Music in King's College, London.
الصفحة 30 - THE PRINCE'S PROGRESS, AND OTHER POEMS. With two Designs by DG ROSSETTI. Fcap. 8vo. 6s. " Miss Rossetti' 's poems are of the kind which recalls Shelley's definition of Poetry as the record of the best and happiest moments of the best and happiest minds.
الصفحة 366 - WILL, while we have no knowledge of any other primary cause of force, it does not seem an improbable conclusion that all force may be will-force; and thus, that the whole universe is not merely dependent on, but actually is, the WILL of higher intelligences or of one Supreme Intelligence.
الصفحة 39 - BACON'S ESSAYS AND COLOURS OF GOOD AND EVIL. With Notes and Glossarial Index. By W. ALDIS WRIGHT, MA "The beautiful little edition of Bacon's Essays, now before us, does credit to the taste and scholarship of Mr.
الصفحة 383 - A Narrative of the Expedition to Central Africa for the Suppression of the Slave Trade, organised by ISMAIL, Khedive of Egypt.
الصفحة 32 - The editor has aimed to produce a book ' ' which the emigrant, finding room for little not absolutely necessary, might yet find room for in his trunk, and the traveller in his knapsack, and that on some narrow shelves where there are few books this might be one.
الصفحة 27 - One quality in the piece, sufficient of itself to claim a moment's attention, is that it is unique— original, indeed, is not too strong a word — in the manner of its conception and execution.
الصفحة 5 - Galileo. — THE PRIVATE LIFE OF GALILEO. Compiled principally from his Correspondence and that of his eldest daughter, Sister Maria Celeste, Nun in the Franciscan Convent of S. Matthew in Arcetri. With Portrait. Crown 8vo.
الصفحة 23 - THE POEMS OF ARTHUR HUGH CLOUGH, sometime Fellow of Oriel College, Oxford. Fourth Edition. Fcap. 8vo. 6s. "from the higher mind of cultivated, all-questioning, but still conservative England, in this our puzzled generation, we do not know of any utterance in literature so characteristic as the poems of Arthur Hugh Clough.