Nature, Volume 100Sir Norman Lockyer Macmillan Journals Limited, 1917 |
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Página 17
... material throughout and with others in which a more expensive and highly refractory material was employed as a lining only . Further progress was also made with investigations into methods of stirring and of melting which shall protect ...
... material throughout and with others in which a more expensive and highly refractory material was employed as a lining only . Further progress was also made with investigations into methods of stirring and of melting which shall protect ...
Página 175
... material of considerable intrinsic value , even after it has served its primary purpose as footwear . Mr. Lamb's paper appears in the issue of the Journal of the society for September 29 , and as it affords a good illustration of what ...
... material of considerable intrinsic value , even after it has served its primary purpose as footwear . Mr. Lamb's paper appears in the issue of the Journal of the society for September 29 , and as it affords a good illustration of what ...
Página 345
... material . Felspars are , in fact , the most abundant mine- rals in the earth's crust , constituting , according to Dr. Hatch , about 48 per cent , of the whole , the potash felspars forming the predominant propor- tion . Orthoclase ...
... material . Felspars are , in fact , the most abundant mine- rals in the earth's crust , constituting , according to Dr. Hatch , about 48 per cent , of the whole , the potash felspars forming the predominant propor- tion . Orthoclase ...
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