Chemical News and Journal of Industrial Science, Tomy 121-122Chemical news office., 1920 |
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Strona 6
... period to a temperature of about 140 deg . Cen . , rubber becomes profoundly modified and acquires new properties which render it eminently suitable for the manufacture of a host of useful articles . It loses its adhesiveness , becomes ...
... period to a temperature of about 140 deg . Cen . , rubber becomes profoundly modified and acquires new properties which render it eminently suitable for the manufacture of a host of useful articles . It loses its adhesiveness , becomes ...
Strona 7
... period , usually three months . If he fails to do this he is obliged to get another licence for the same ore or forfeit the ore to the Government . The total exports of tungsten ore in 1918 amounted to 10,365 tons ( of 2000 lbs ...
... period , usually three months . If he fails to do this he is obliged to get another licence for the same ore or forfeit the ore to the Government . The total exports of tungsten ore in 1918 amounted to 10,365 tons ( of 2000 lbs ...
Strona 13
... period from 1908 to 1917 , F. T. Schutt and R. L. Dorrance , of Ottawa , Canada , con- ducted a series of analyses of rains and snows that fell in that section of the country . In 1914 , under the direction of Dr. N. Knight , of Cornell ...
... period from 1908 to 1917 , F. T. Schutt and R. L. Dorrance , of Ottawa , Canada , con- ducted a series of analyses of rains and snows that fell in that section of the country . In 1914 , under the direction of Dr. N. Knight , of Cornell ...
Strona 20
... period are very important . Kilns are of the type used in the pottery industry , and are fired by a series of hard- coal fires uniformly spaced around the base of the kilns . In the larger types of kilns , it is approxi- mately three ...
... period are very important . Kilns are of the type used in the pottery industry , and are fired by a series of hard- coal fires uniformly spaced around the base of the kilns . In the larger types of kilns , it is approxi- mately three ...
Strona 22
... period will be greater than those held last year . Canada reports an area under wheat 17 per cent above the average from 1914 to 1918 also an ex- cellent crop prospect , and it is therefore per- missible to estimate that the yield will ...
... period will be greater than those held last year . Canada reports an area under wheat 17 per cent above the average from 1914 to 1918 also an ex- cellent crop prospect , and it is therefore per- missible to estimate that the yield will ...
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