highly concentrated coating boards are placed, which at adjacent sides are ily replaced when ‘necessary. The valve casing is de- prussic acid will kill a man as quickly as a shot through formed with rabbets to produce bottom flanges, trans- signed to be inserted through the rubber nipple ex- the… … the strip is flush with the boards and can be nailed in position. By the arrange- ment described, the boards are securely fastened in ble perfumes of sewers and bone factories are attributa- place, so that they are prevented from warping. Lon- ble chiefly to the same gas. Chemical laboratories are…
Internet Archive · Public domain (published before 1931). Free to use for anything.
![An illustration from [Electric engineering.] (1902)](https://img.insideoutlibrary.com/img/200/ia-electricengineer03inte-658-394.webp)
