Chemical News and Journal of Industrial Science, Tomy 5-6Chemical news office., 1862 |
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Strona 299
... examined by means of a lens , they were found perfectly free from earthy matter . The plants were burned , and their ashes examined . In three of the specimens no alumina was present ; in the fourth , it existed to the extent of 125 per ...
... examined by means of a lens , they were found perfectly free from earthy matter . The plants were burned , and their ashes examined . In three of the specimens no alumina was present ; in the fourth , it existed to the extent of 125 per ...
Strona 118
... examined with negative results The portions of copper selected for these experi- ments were those which presented the dark grey coating in the stronger degree . Globules of moisture were alone visible under the microscope , with the ...
... examined with negative results The portions of copper selected for these experi- ments were those which presented the dark grey coating in the stronger degree . Globules of moisture were alone visible under the microscope , with the ...
Strona 134
... examined are , with two or three exceptions , of excellent chemical quality . Only three instances occur in these divisions of the series of iron samples ( out of 26 samples from eight different works ) in which the amount of silicon ...
... examined are , with two or three exceptions , of excellent chemical quality . Only three instances occur in these divisions of the series of iron samples ( out of 26 samples from eight different works ) in which the amount of silicon ...
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