Electrochemical and metallurgical industry . a delivery tube passing through thecork, the delivery tube connecting direct to the upper endof burette. The presseure necessary to force the solution I02 AND MFTAIJ-ITRGTCAr. INDUSTRY. [Vol. Ill, No. .i from the bottle to tlie burette is supplied by two rubberbulbs having air inlet valves so arranged that a continuouspressure may be produced. The inn-r (and larger) bulb iscovered with a strong cord net in order to remove the ilangerof bursting from too great a pressure. Un the table are twoclosets, having shelves large enough to h
Electrochemical and metallurgical industry . a delivery tube passing through thecork, the delivery tube connecting direct to the upper endof burette. The presseure necessary to force the solution I02 AND MFTAIJ-ITRGTCAr. INDUSTRY. [Vol. Ill, No. .i from the bottle to tlie burette is supplied by two rubberbulbs having air inlet valves so arranged that a continuouspressure may be produced. The inn-r (and larger) bulb iscovered with a strong cord net in order to remove the ilangerof bursting from too great a pressure. Un the table are twoclosets, having shelves large enough to hold a two-(|uartbottle, and serving the purpose of keeping the solutions inthe dark; the closet doors bear the symbols of the re--spective stock solutions. In his laboratory the author has thefollowing-named stock solutions, potassium cyanide, potassiumdichromate, potassium permanganate, potassium potassium hydroxide, N/io sulphuric acid, copper sul-phate, annnonium nK>lybdate. An additional set of these so- Jb io. FIGS. 2, 3, 4.—DETAILS OF THE CHEMISts HE.\RTH. lutions kept in reserve in the dark closet allows a convenientinterval of time in which to prepare fresh solutions. A cupboard is provided in which to store a complete set ofthe chemicals needed in this line of work, as well as such ap-paratus n .are as are only occasionally used. The ; in \< tiehtly ceiled, special care having been taken to make it It has three windows on each long side, and a s\v . i-h-door entrance at the end, whichguards against collisions between assayer and chemist when passing through the door-way in opposite directions. The bench on which llie balances rest is suportcd by woodenposts set in concrete, and extending through the floor to with a clearatice. The scales set on plateglass, when once adjusted, remain level for a considerabletime, any shrinkage of the table having no effect on theposition of the plane of the plate glass. The gener
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Keywords: ., bookcentury1900, bookdecade1900, booksubje, booksubjectmetallurgy
