Journal of the Franklin InstituteVols. 1-69 include more or less complete patent reports of the U. S. Patent Office for years 1825-1859. cf. Index to v. 1-120 of the Journal, p. [415] |
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Page 47
On the Purification of Iron and Coke from Sulphur . At the meeting of the French Academy of Sciences , on the 27th September , M. Chevreul read a note upon this subject from M. Calvert , of which the following extracts will give the ...
On the Purification of Iron and Coke from Sulphur . At the meeting of the French Academy of Sciences , on the 27th September , M. Chevreul read a note upon this subject from M. Calvert , of which the following extracts will give the ...
Page 62
On the Occurrence of Metallic Iron in Fossil Wood . By W. G. LETTSOM , Esq . * In the recent edition of Phillip's Mineralogy by Messrs . Brooke and Miller , at page 685 , mention is made of the discovery of metallic iron in certain ...
On the Occurrence of Metallic Iron in Fossil Wood . By W. G. LETTSOM , Esq . * In the recent edition of Phillip's Mineralogy by Messrs . Brooke and Miller , at page 685 , mention is made of the discovery of metallic iron in certain ...
Page 63
When the surface was brushed with the feathery part of a quill , metallic iron was rendered visible , penetrating the general mass of the wood in a pulverulent form , or in the state of scales and angular and rounded grains .
When the surface was brushed with the feathery part of a quill , metallic iron was rendered visible , penetrating the general mass of the wood in a pulverulent form , or in the state of scales and angular and rounded grains .
Page 65
Mr. Samuel Blackwell , himself an ironmaster , accompanied the collection of iron ores by a statement of great value . He estimates the gross annual production of iron in Great Britain to be now upwards of 2,500,000 tons .
Mr. Samuel Blackwell , himself an ironmaster , accompanied the collection of iron ores by a statement of great value . He estimates the gross annual production of iron in Great Britain to be now upwards of 2,500,000 tons .
Page 66
The mode of smelting iron consists in mixing the ore with lime and coal ; the former producing a slay or glass with the impurities of the ore , while the coal reduces the oxide of iron to its metallic state .
The mode of smelting iron consists in mixing the ore with lime and coal ; the former producing a slay or glass with the impurities of the ore , while the coal reduces the oxide of iron to its metallic state .
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