The Origin of Species by Means of Natural Selection: Or, The Preservation of Favored Races in the Struggle for Life, 1권D. Appleton & Company, 1889 |
도서 본문에서
75개의 결과 중 6 - 10개
xx 페이지
... If we interpret these sentences given in the same Address , one by the other , it appears that this eminent philosopher felt in 1858 his confidence " shaken that the Apteryx and the Red Grouse first appeared XX HISTORICAL SKETCH .
... If we interpret these sentences given in the same Address , one by the other , it appears that this eminent philosopher felt in 1858 his confidence " shaken that the Apteryx and the Red Grouse first appeared XX HISTORICAL SKETCH .
xxiv 페이지
... given rise to new forms . In this same year , 1853 , Dr. Schaaffhausen published an excellent pamphlet ( ' Verhand . des Naturhist . Vereins der Preuss . Rheinlands , ' & c . ) , in which he maintains the development of organic forms on ...
... given rise to new forms . In this same year , 1853 , Dr. Schaaffhausen published an excellent pamphlet ( ' Verhand . des Naturhist . Vereins der Preuss . Rheinlands , ' & c . ) , in which he maintains the development of organic forms on ...
5 페이지
... given namely , first , the difficulties of transitions , or how a simple being or a simple organ can be changed and perfected into a highly developed being or into an elaborately constructed organ ; secondly , the subject of Instinct ...
... given namely , first , the difficulties of transitions , or how a simple being or a simple organ can be changed and perfected into a highly developed being or into an elaborately constructed organ ; secondly , the subject of Instinct ...
11 페이지
... given in another work a long list of " sporting plants , " as they are called by gardeners ; that is , of plants which have suddenly produced a single bud with a new and sometimes widely different character from that of the other buds ...
... given in another work a long list of " sporting plants , " as they are called by gardeners ; that is , of plants which have suddenly produced a single bud with a new and sometimes widely different character from that of the other buds ...
13 페이지
... given in Isidore Geoffroy St. Hilaire's great work on this subject . Breeders believe that long limbs are almost always accompanied by an elongated head . Some instances of correlation are quite whimsical : thus cats which are entirely ...
... given in Isidore Geoffroy St. Hilaire's great work on this subject . Breeders believe that long limbs are almost always accompanied by an elongated head . Some instances of correlation are quite whimsical : thus cats which are entirely ...
기타 출판본 - 모두 보기
자주 나오는 단어 및 구문
adapted advantage allied analogous animals and plants appear Asa Gray beak become bees believe birds breeds caudicle cause cells characters climate closely Cloth colour common crossed cuckoo degree descendants developed difficulty distinct species disuse domestic animals domestic races doubt effects eggs existence extinct extremely facts favourable females flowers forms Fritz Müller genera genus gradations greater number groups habits Hence hermaphrodites hive-bee important improved inhabitants inherited insects instance instincts intercrossing intermediate kind lamellæ large number larger genera larvæ less likewise males manner Mivart modified natural selection naturalists nearly nest neuters occasionally offspring organisation organs origin ORIGIN OF SPECIES parent perfect period pigeons pollen pollen-grains present preserved principle probably produced progenitor quadrupeds rank Red Grouse remarked resemble rock-pigeon seeds sexes sexual sexual selection slight stamens structure struggle sub-breeds supposed swimbladder tend tendency tion transitional tree tumbler pigeon variability variations varieties vary widely wild wings young
인기 인용구
227 페이지 - If it could be proved that any part of the structure of any one species had been formed for the exclusive good of another species, it would annihilate my theory, for such could not have been produced through natural selection.
203 페이지 - If it could be demonstrated that any complex organ existed which could not possibly have been formed by numerous, successive, slight modifications, my theory would absolutely break down.
75 페이지 - Several writers have misapprehended or objected to the term Natural Selection, Some have even imagined that natural selection induces variability, whereas it' implies only the. preservation of such variations as arise and are beneficial to the being under its conditions of * life.
xxv 페이지 - As many more individuals of each species are born than can possibly survive ; and as, consequently, there is a frequently recurring straggle for existence, it follows that any being, if it vary however slightly in any manner profitable to itself, under the complex and sometimes varying conditions of life, will have a better chance of surviving, and thus be naturally selected.
xix 페이지 - In the distant future I see open fields for far more important researches. Psychology will be based on a new foundation, that of the necessary acquirement of each mental power and capacity by gradation. Light will be thrown on the origin of man and his history.
144 페이지 - It is well known that several animals, belonging to the most different classes, which inhabit the caves of Carniola and of Kentucky, are blind. In some of the crabs the foot-stalk for the eye remains, though the eye is gone; — the stand for the telescope is there, though the telescope with its glasses has been lost. As it is difficult to imagine that eyes, though useless, could be in any way injurious to animals living in darkness, their loss may be attributed to disuse.
55 페이지 - Nothing is easier than to admit in words the truth of the universal struggle for life, or more difficult — at least I have found it so — than constantly to bear this conclusion in mind.
341 페이지 - Cloth, $2.00. DIFFERENT FORMS OF FLOWERS ON PLANTS OF THE SAME SPECIES. With Illustrations. 12mo. Cloth, $1.50. THE POWER OF MOVEMENT IN PLANTS. By CHARLES DARWIN, LL. D., FRS, assisted by FRANCIS DARWIN.
140 페이지 - The limbs divided into great branches, and these into lesser and lesser branches, were themselves once, when the tree was small, budding twigs; and this connection of the former and present buds by ramifying branches may well represent the classification of all extinct and living species in groups subordinate to groups.
140 페이지 - The affinities of all the beings of the same class have sometimes been represented by a great tree. I believe this simile largely speaks the truth. The green and budding twigs may represent existing species ; and those produced during each former year may represent the long succession of extinct species.