Nature, Količina 92Sir Norman Lockyer Macmillan Journals Limited, 1913 |
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Stran 117
... CARBONIFEROUS . We now reach the period in Paleozoic times when calcareous algæ attained their maximum development in England , a development rivalling that which ob- tained in the Ordovician rocks of Scotland and the Gotlandian of ...
... CARBONIFEROUS . We now reach the period in Paleozoic times when calcareous algæ attained their maximum development in England , a development rivalling that which ob- tained in the Ordovician rocks of Scotland and the Gotlandian of ...
Stran 118
... Carboniferous districts . In 1890 Mr. E. Wethered described 25 two new forms from the Lower Carboniferous of the Avon Gorge and Tortworth , viz . , G. incrustans , with tubes having a diameter of o'r mm . , and G. Ducii with a diameter ...
... Carboniferous districts . In 1890 Mr. E. Wethered described 25 two new forms from the Lower Carboniferous of the Avon Gorge and Tortworth , viz . , G. incrustans , with tubes having a diameter of o'r mm . , and G. Ducii with a diameter ...
Stran 119
... Carboniferous times . Over the greater part of north Cumberland and the east of Roxburgh we find a remarkable development of algal limestones in the formation of which Mitchel- deania plays a very important part . They are met with ...
... Carboniferous times . Over the greater part of north Cumberland and the east of Roxburgh we find a remarkable development of algal limestones in the formation of which Mitchel- deania plays a very important part . They are met with ...
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Hurry Dr J B Ideals and Organisation of a Medical | 13 |
Hurst Major C C Genetics 490 | 63 |
Shipley Dr A E Guy A K Marshall Fauna of British Sullivan M X and F R Reid Soil Catalysis 560 | 85 |
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acid æther agricultural algæ animals appears applied atom British Association carbon Carboniferous cell cent chemical chemistry College comet committee connection cotyledon course deal described discovery discussion edition effect electric engineering experimental experiments fact genus geological given helium Hermann et Fils homoplasy hydrogen hypocotyl illustrated important Institute interest investigation J. J. Thomson laboratory lambdoid suture larvæ lectures limestone lines London magnetic matter ment metal method molecule Museum National Physical Laboratory nature November observations obtained October oolitic Ordovician organic origin paper physical Piltdown plants plates practical present Price problem Prof published radio-active radium recent reference regard region rocks Royal Society scientific Solenopora South species specimens spectra structure telegraphy temperature theory tion tubes University velocity volume xylem