The book Annual Report 1868 was written by author Smithsonian Institution Here you can read free online of Annual Report 1868 book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Annual Report 1868 a good or bad book?
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It is proper to add, moreover, that the iron meteorites themselves do not always present the geometric regularity just indicated. There are those in which the phosphuret is isolated under rounded forms, quite irregular and often indistinct Another series of experiments had for its object to associate soft iron with each of the principal substances which accompany it in the meteorites, particularly with nickel, silicium, sulphur, and phosphorus. By associating soft iron with nickel, with protosu...lphuret of iron, and with silicium, masses were obtained of a dendritic or extremely crystalline structure, but offering no true segregation com- parable to that of the ferruginous meteorites. It is otherwise if we melt soft iron with the addition of phosphuret of iron in a proportion which has been earned from 2 to 5 and 10 per 100. We then see isolated on the polished surface which has undergone the action of the acid a more* brilliant and resisti^nt substance which perfectlv resembles that of the iron meteorites, excepting a less degree of regularity in the figinre.
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