The Technical World Magazine, Volume 7Technical World Company, 1907 |
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Results 6-10 of 62
Page 131
... practical method of eradicating weeds will be of at least twice the value of either of these . The experiments carried on consist in spraying the field with a ten per cent so- lution of iron sulphate . The idea of controlling wild ...
... practical method of eradicating weeds will be of at least twice the value of either of these . The experiments carried on consist in spraying the field with a ten per cent so- lution of iron sulphate . The idea of controlling wild ...
Page 134
... practical . The sulphate of iron costs fifty - five cents per acre . The cost of labor is estimated at twenty cents , making a total of seventy- five cents per acre . The opinion of the farmers as to this cost will afford the best ...
... practical . The sulphate of iron costs fifty - five cents per acre . The cost of labor is estimated at twenty cents , making a total of seventy- five cents per acre . The opinion of the farmers as to this cost will afford the best ...
Page 151
... practical account have been made , but success has been only medi- ocre , and not sufficient to warrant the commercial use of the system . Two great difficulties confront the realization of such a project , as these exploiters have ...
... practical account have been made , but success has been only medi- ocre , and not sufficient to warrant the commercial use of the system . Two great difficulties confront the realization of such a project , as these exploiters have ...
Page 172
... practical basis of manufacture . It is not too much to say that within a comparatively brief space of time there will be in use in the homes , offices and work - shops of the civilized world mil- lions of tiny artificial suns which will ...
... practical basis of manufacture . It is not too much to say that within a comparatively brief space of time there will be in use in the homes , offices and work - shops of the civilized world mil- lions of tiny artificial suns which will ...
Page 209
... metals will take their named . Asia is conceded to have great deposits of coal , but even an approximate estimate of their extent cannot well be given . A Royal Engineer GERMANY is practical and owes not a. SCIENCE AND INVENTION . 209.
... metals will take their named . Asia is conceded to have great deposits of coal , but even an approximate estimate of their extent cannot well be given . A Royal Engineer GERMANY is practical and owes not a. SCIENCE AND INVENTION . 209.
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