Natural Science, 2. köideMacmillan, 1893 |
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Page 25
... . , Order Nautiloidea ) , states that " no evidence has as yet been brought forward that the fossil forms included by Owen in the Tetrabranchiata were other than four- gilled . " to be oviducts , and it has since been made 1893 . 25 OWEN .
... . , Order Nautiloidea ) , states that " no evidence has as yet been brought forward that the fossil forms included by Owen in the Tetrabranchiata were other than four- gilled . " to be oviducts , and it has since been made 1893 . 25 OWEN .
Page 28
... evidence that the Ammonites were tetrabranchiates protected by an external shell , and he points out that the occurrence of the protective ink - bag in the Spirula proves that mollusc to belong to the more active dibranchiate order ...
... evidence that the Ammonites were tetrabranchiates protected by an external shell , and he points out that the occurrence of the protective ink - bag in the Spirula proves that mollusc to belong to the more active dibranchiate order ...
Page 41
... evidence in favour of individuality among cultivated plants . Every gardener and florist knows that it is impossible to predict absolute uniformity in the offspring of a single plant , even when the greatest care is taken to prevent ...
... evidence in favour of individuality among cultivated plants . Every gardener and florist knows that it is impossible to predict absolute uniformity in the offspring of a single plant , even when the greatest care is taken to prevent ...
Page 49
... evidence concerning the transitional stages of development of the larger southern species of Terebratella and Magellania . These successive stages are shown to be of a more complicated character and to differ somewhat from those ...
... evidence concerning the transitional stages of development of the larger southern species of Terebratella and Magellania . These successive stages are shown to be of a more complicated character and to differ somewhat from those ...
Page 69
... evidence of former climatic conditions . Most of the opinions quoted are , however , extremely speculative , and of little value , and , wisely , Mr. Seward seldom ventures an opinion of his own on so difficult a subject as bygone ...
... evidence of former climatic conditions . Most of the opinions quoted are , however , extremely speculative , and of little value , and , wisely , Mr. Seward seldom ventures an opinion of his own on so difficult a subject as bygone ...
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Common terms and phrases
A. C. Haddon adult Algæ Ammonites anatomy ancestors animal Antedon appear arranged birds botanist Botany Brachiopoda Catalogue cells characters collection colour CONCHOLOGIST contains Crustacea described disease district edition eggs embryo evidence evolution existence extinct fact fauna fertilisation fish flora flowers forest fossil gastrula genera genus Geological illustrations inches insects interesting islands Journal Kilima-njaro known large number larvæ Lepidoptera less London Magellania mammals Marsupials memoir microbe moths Natural History NATURAL SCIENCE Natural Selection naturalists nucleus observations occur ocean organs original ovum Owen Owen's paper plants plates Pliocene pollination post free premolar present Price produced Professor protoplasm published Recapitulation Theory recent recognised referred remarkable reptiles researches resemblance scientific shell skull Society species specimens stages structure supposed teeth theory tion trees tropical variation various vertebrate volume Zoological