Nature, Volume 11Sir Norman Lockyer Macmillan Journals Limited, 1874 |
No interior do livro
Resultados 1-3 de 87
Página 34
... FLOWERS BY INSECTS * VII . Butterflies the most frequent visitors of Alpine flowers . IN N the following article I wish to recommend for further inquiry a subject of peculiar interest which , in the environs of the Ortler , in Tyrol ...
... FLOWERS BY INSECTS * VII . Butterflies the most frequent visitors of Alpine flowers . IN N the following article I wish to recommend for further inquiry a subject of peculiar interest which , in the environs of the Ortler , in Tyrol ...
Página 110
... flower . Thus cross - fertilisation is secured in case suitable insects visit the flowers , whereas when visits of suitable insects are wanting , pollen may easily fall down in both species from the anthers upon the stigma of the same ...
... flower . Thus cross - fertilisation is secured in case suitable insects visit the flowers , whereas when visits of suitable insects are wanting , pollen may easily fall down in both species from the anthers upon the stigma of the same ...
Página 111
... flowers of the long - styled form are fertilised by pollen of short- styled flowers , and vice versa . Thus in Primula officinalis and villosa , as in all dimorphic species , intercrossing of different plants takes place naturally ; and ...
... flowers of the long - styled form are fertilised by pollen of short- styled flowers , and vice versa . Thus in Primula officinalis and villosa , as in all dimorphic species , intercrossing of different plants takes place naturally ; and ...
Outras edições - Ver tudo
Palavras e frases frequentes
acid agricultural animals Apparatus appears arctic astronomical Bedford Street birds British C. J. VAN HOUTEN Cambridge Capt Catalogue Chemical Chemistry chromosphere Cocoa College colour contains Covent Garden Crown 8vo December ditto Edition English examination expedition experiments fact Fallow Deer Fitzroy Square flame Fleet Street flowers foraminifera Fossils Geology Globigerina Globigerina ooze High Holborn HOUTEN'S COCOA Illustrations insects instruments interesting Island JOHN Journal Lantern lectures Lepidoptera letter London MACMILLAN Manufactures Maps ment method Microscopes Museum Natural History Natural Science notes object observations Observatory obtained Office original paper Phylloxera physical plane plants plates post free post-free practical present Prof Professor published recent region remarks researches Royal Society School scientific shell Sir John Lubbock Sound South species specimens spectroscope Spitzbergen Statham's Strand surface temperature theory tion Transit of Venus volume