manganate of baryta. force pump, B, into the two branches of a pipe, C, on top of turned. It will be noticed that the apparatus, while thus The production of the blue or bluish green baryta color is the tank. The lever of the pumps is actuated, as will readi- due entirely to the alkaline property… … less permanent, because the nitrous acid wagons, and are attached to the tank by present will after atime exert a reducing means of vertical bars. The machine JOHNSON’S COTTON WORM DESTROYER. action. is thus enabled to pass over the rows of The baryta pigments seem especially adapted to fresco of…
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