Science Progress, Volum 7John Bretland Farmer Scientific Press, 1898 |
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Ægean air-bladder Algæ alternation animals antithetic apogamy Apospory appears asparagin Bennettites blood Botany Bryophyta carbonic acid cells cent character cœlom colour contains Corrèze cyanide Cycads Dordogne effect evidence existence experiments fact Faraday effect ferns fish fossil gametophyte genus Geology gold Ibid illustrations important increased interest investigations Kossel laccase less liquids London magnetic force matter means metabolism method molecules morphology muscle nature nerve nitrogen nucleic acid observed obtained occur organs origin ovum oxide oxygen paper pavonia phenomena Physiol physiology plants polarised precipitated present Pringsheim probably produced Prof Professor proteids proteïns prothallus Pteridophyta race recent recognised referred regarded rocks Sachs SCIENCE PROGRESS scientific sexual slimes solution species sporophyte stem stones structure student substance tension text-book Thallophytes theory tion tissue Ueber University of Oxford vaccination vegetative vibrations Wealden Zoology
Populære avsnitt
Side 24 - I discovered, though unconsciously and insensibly, that the pleasure of observing and reasoning was a much higher one than that of skill and sport.
Side 34 - So careful of the type?' but no. From scarped cliff and quarried stone She cries, 'A thousand types are gone; I care for nothing, all shall go. 'Thou makest thine appeal to me: I bring to life, I bring to death; The spirit does but mean the breath: I know no more.
Side 319 - Alternation of Generations^ is the remarkable phenomenon of an animal producing an offspring which at no time resembles its parent, but which, on the other hand, itself brings forth a progeny which returns in its form and nature to the parent animal, so that the maternal animal does not meet with its resemblance in its own brood, but in its descendants of the second, third, or fourth degree of generation.
Side 20 - Collignon is right in his affirmation that '' when a race is well seated in a region, fixed to the soil by agriculture, acclimatized by natural selection, and sufficiently dense, it opposes an enormous resistance to absorption by newcomers, whoever they may be.
Side 355 - Villing and many other places that in each of them it was thought some houses had fallen. King Maximilian, who was then at Ensisheim, had the stone carried to the castle ; after breaking off two pieces, one for the Duke Sigismund of Austria and the other for himself, he forbade further damage, and ordered the stone to be suspended in the parish church.
Side 42 - Geology, announced, . . . the grand fact of an universal deluge at no very remote period is proved on grounds so decisive and incontrovertible, that, had we never heard of such an event from Scripture, or any other authority...
Side 32 - The great Question now so much controverted in the world' had already been established in Oxfordshire: Whether the Stones we find in the forms of Shellfish, be Lapides sui generis, naturally produced by some extraordinary plastic virtue latent in the Earth or Quarries where they are found? Or whether they rather owe their form and iguration to the shells of the Fishes they represent...
Side 43 - It has been justly argued, against the attempt to identify these two great historical and natural phenomena, that as the rise and fall of the waters of the Mosaic deluge are described to have been gradual and of short duration, they would have produced comparatively little change on the surface of the country they overflowed.
Side 335 - The morphological cause of the reduction in the number of chromosomes and of their equality in number in the sexual cells is, in my opinion, phylogenetic. I look upon these facts as indicating a return to the original generation from which, after it had attained sexual differentiation, offspring was developed having a double number of chromosomes.
Side 104 - Alle Gestalten sind ähnlich, und keine gleichet der andern ; und so deutet das Chor auf ein geheimes Gesetz, auf ein heiliges Rätsel. O könnt...