Chemical News and Journal of Industrial Science, Tom 39Chemical news office., 1879 |
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Strona 29
... means glyoxalic acid , and his notations correspond with his remarkable synthesis of allantoin : but Mr. Main , rightly estimating the total elements of glyoxylic acid , gives allanturic acid as one of its derivatives , which is a ...
... means glyoxalic acid , and his notations correspond with his remarkable synthesis of allantoin : but Mr. Main , rightly estimating the total elements of glyoxylic acid , gives allanturic acid as one of its derivatives , which is a ...
Strona 31
... means of getting the mechanical effect of air with a smaller proportion of oxygen . Mr. MORRISON - The steam protects the lead ? Mr. COOKSON - No ; for if we work soft leads we find , with all our care , that the quantity of oxides ...
... means of getting the mechanical effect of air with a smaller proportion of oxygen . Mr. MORRISON - The steam protects the lead ? Mr. COOKSON - No ; for if we work soft leads we find , with all our care , that the quantity of oxides ...
Strona 33
... means of zinc or aluminium and caustic potash , and not by Zn and dilute sulphuric acid , as has always been customary in the Marsh apparatus , AsH3 is readily evolved , but if tried with antimony compounds not the least trace of SbH3 ...
... means of zinc or aluminium and caustic potash , and not by Zn and dilute sulphuric acid , as has always been customary in the Marsh apparatus , AsH3 is readily evolved , but if tried with antimony compounds not the least trace of SbH3 ...
Strona 35
... MEANS OF DETECTING THE ADULTERATION OF SAFFRON . To detect adulteration with Calendula flowers ( Feminelle ) , it is merely required to moisten a few flowers , and to rub them singly with the finger on white paper . The genuine flowers ...
... MEANS OF DETECTING THE ADULTERATION OF SAFFRON . To detect adulteration with Calendula flowers ( Feminelle ) , it is merely required to moisten a few flowers , and to rub them singly with the finger on white paper . The genuine flowers ...
Strona 42
... means of water the contents of the filter are washed into a weighed porcelain crucible . Anything adhering to the solution is concentrated by evaporation , nitric acid is the paper is dissolved in a little warm dilute ammonia , added in ...
... means of water the contents of the filter are washed into a weighed porcelain crucible . Anything adhering to the solution is concentrated by evaporation , nitric acid is the paper is dissolved in a little warm dilute ammonia , added in ...
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