Chemical News and Journal of Physical Science, Tom 121Chemical news office., 1921 |
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Strona 13
... less frequent in its occurrence , for 32 per cent of the rainfalls gave no tests for it . A total of 0.4974 pounds of nitro- gen as ammonia in the albuminoid form fell , the CHEMICAL NEWS 13 NEWS ] Substances Dissolved in Rain and Snow .
... less frequent in its occurrence , for 32 per cent of the rainfalls gave no tests for it . A total of 0.4974 pounds of nitro- gen as ammonia in the albuminoid form fell , the CHEMICAL NEWS 13 NEWS ] Substances Dissolved in Rain and Snow .
Strona 16
... less for high - grade clays . Bricks made from some clays , after osmosing , are better buint at 1100 ° C. than from the raw clay at 1300 ° C. Many alluvial red - burning clays cannot be fired to vitrification because , before ...
... less for high - grade clays . Bricks made from some clays , after osmosing , are better buint at 1100 ° C. than from the raw clay at 1300 ° C. Many alluvial red - burning clays cannot be fired to vitrification because , before ...
Strona 17
... less discussing the problem of the production of glass , and he was happy to say that the production of high - grade optical glass of all descriptions was now being wrested by this country from many for- mer competitors , and success ...
... less discussing the problem of the production of glass , and he was happy to say that the production of high - grade optical glass of all descriptions was now being wrested by this country from many for- mer competitors , and success ...
Strona 21
... less fixed . We recommend the follow- ing speeds for different classes of grinding : Application Cylindrical grinding Snagging and general off - hand grinding on bench and floor stands Surface grinding Knife grinding Hemming cylinders ...
... less fixed . We recommend the follow- ing speeds for different classes of grinding : Application Cylindrical grinding Snagging and general off - hand grinding on bench and floor stands Surface grinding Knife grinding Hemming cylinders ...
Strona 22
... less than the average of the five years 1914 to 1918 . It should , however , be remembered that the actual quantity exported from the United States during the current season falls short of the available surplus , so that stocks at the ...
... less than the average of the five years 1914 to 1918 . It should , however , be remembered that the actual quantity exported from the United States during the current season falls short of the available surplus , so that stocks at the ...
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