Nature, Količina 57Sir Norman Lockyer Macmillan Journals Limited, 1897 |
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Zadetki 1–3 od 4
Stran 44
... sporophylls . From numerous em- pirical observations on dioecious Spermatophyta , the inference has generally been drawn that nutrition bears an important re- lation to the development of the staminate and pistillate flowers ; that ...
... sporophylls . From numerous em- pirical observations on dioecious Spermatophyta , the inference has generally been drawn that nutrition bears an important re- lation to the development of the staminate and pistillate flowers ; that ...
Stran 45
... sporophylls to foliage leaves , in an individual , indicates the mode of progress in this sterilisation , does not ... sporophylls , the present dimorphic form of the leaves was brought about . The process of the evolution of the leaf ...
... sporophylls to foliage leaves , in an individual , indicates the mode of progress in this sterilisation , does not ... sporophylls , the present dimorphic form of the leaves was brought about . The process of the evolution of the leaf ...
Stran 142
... sporophylls , and consequently the leaf - traces , are more numerous . The sporophylls , which are arranged in alternating verticils , are relatively short , and of peculiar form ; the lamina is very thick , and of great tangential ...
... sporophylls , and consequently the leaf - traces , are more numerous . The sporophylls , which are arranged in alternating verticils , are relatively short , and of peculiar form ; the lamina is very thick , and of great tangential ...
Vsebina
the Rinderpest Germ MM Nencki Sieber and Arctic Regions | 150 |
Moreau G Magnetic Torsion of Iron and Steel 524 SavilleKent 341 the Habits of IceSeals 346 Bulletin | 326 |
mining Vertical J Perchot and W Ebert 191 the Col | 430 |
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acid animals appears Archibald Geikie Astronomical atomic weight botany British carbon cent chemical chemistry College colour contains course December described determined edition effect electric electrical resistance engineering equations examination exhibited experiments fact feet fluorine Franz Josef Land Funafuti Geological given heat hydrogen illustrated important inches insects Institute interesting investigation J. J. Thomson January Journal kathode laboratory Lake larvæ lectures Lepidoptera lines London magnetic mathematical matter measured ment metal method nature Neolithic November observations Observatory obtained ordinary paper period phenomena photographs physical Physiology plants present President Prof pupa Ray Lankester rays recent recorded reference regard remarkable researches rocks Royal Society salts schools scientific Scotland solution South species specimens sporophylls stars surface temperature theory tion tube University Variable Star volume W. H. Perkin