The Edinburgh New Philosophical Journal: Exhibiting a View of the Progressive Discoveries and Improvements in the Sciences and the Arts, Том 11A. and C. Black, 1860 |
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... existence . Such a detached gemma may be termed a free zooid , or phytoid . In the ordinary form of reproduction , again , that by the co - operation of the sexes , otherwise termed Heterogenesis , or Digenesis , a fusion takes place of ...
... existence . Such a detached gemma may be termed a free zooid , or phytoid . In the ordinary form of reproduction , again , that by the co - operation of the sexes , otherwise termed Heterogenesis , or Digenesis , a fusion takes place of ...
Страница 5
... existence in a rudimentary state ; but the progeny , which it buds off , acquire , in due course , the typical form , or at least give origin , mediately or immediately , to others which do so . These two kinds of zooids , however ...
... existence in a rudimentary state ; but the progeny , which it buds off , acquire , in due course , the typical form , or at least give origin , mediately or immediately , to others which do so . These two kinds of zooids , however ...
Страница 9
... existence , and it would then cease to have the ancillary cha- racter of a nurse to the ova of the fixed individuals , and would assume that of the perfected form of the species ; and such , in fact , is the case with the larger ...
... existence , and it would then cease to have the ancillary cha- racter of a nurse to the ova of the fixed individuals , and would assume that of the perfected form of the species ; and such , in fact , is the case with the larger ...
Страница 12
... existence terminating when the embryo formed in it has begun to germinate . § 6. Orthomorphic Alternation . In the intermediate period of the life - history of the species , that here termed orthomorphic , which intervenes between the ...
... existence terminating when the embryo formed in it has begun to germinate . § 6. Orthomorphic Alternation . In the intermediate period of the life - history of the species , that here termed orthomorphic , which intervenes between the ...
Страница 14
... existence in the same species , as in some Cestoid worms , and perhaps in a more latent form in the case of the Polyzoa * and of some Annelida . These , how- ever , are exceptional cases , for it would appear that organisms which are ...
... existence in the same species , as in some Cestoid worms , and perhaps in a more latent form in the case of the Polyzoa * and of some Annelida . These , how- ever , are exceptional cases , for it would appear that organisms which are ...
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acid ancient animals appearance arch Archegosaurus bones botany Bowfell caloric carbon carbonic acid caves cent Cestoidea character colour combustion contains distinct district draught Eastern Echinodermata Edinburgh effect embryogeny Europe exhibited existence fact feet flora formation fossils fuel gamomorphic gemmæ gemmation genera genus give glacial glaciers gneiss goitre Haurân hills hydrogen insects instance lake larvæ latter Lejah less light loss luminous mean temperature miles moraine mountains nature nearly Nitrogen North America observations occur organs origin orthomorphic ovum peculiar period phenomena plants portion present probably produced Professor protomorphic referred region remarkable resemblance roches moutonnées rock seen self-registering sepals SERIES.-VOL side Silurian similar skull Society species specific gravity specific heat specimens streamers structure surface Table tarn Taxodium thermometer tion trees Trematoda valley vegetable vertebræ weight Wellingtonia western whole zooids