Opinions differ as to whether the water-wheel almost universally known as the Pelton type belongs to the impulse, the tangential, the reactive, the jet or
In presenting the subject of “ Armored Turrets for Coast Defense ” to this Institute, I am indebted to the Gruson Iron-works, a company incorporated
It has already been shown by Maclaurin, that the dissolving power of a cyanide solution saturated with oxygen increases with its strength until a strength
The peroxide of hydrogen used was Marchand’s medicinal, containing 3.3 per cent, of available peroxide, as determined by titration with permanganate of potassium. According to
We have another substance at hand with a great tendency to form negative ions. This is the oxygen of the air. In the presence of
The practice of the cyanide-process of gold-extraction has brought to light many important contradictions of familiar chemical analogies, which still obscure both the theory and
In looking about for some means of determining the relative affinities of the metals for cyanide solutions, I long ago came to the conclusion that
The extreme difficulty of obtaining a short and, at the same time, exact method for the determination of gold and silver in copper materials has been
As it is my opinion that deep alluvial mining methods in Victoria and in the Murray Flats in New South Wales are practically in their infancy, and
The following paper deals with a method for the “Approximate Analysis ” of Chloridized Ores, which are free from arsenic, antimony and lime. When these