l glass vessels which I have examined filled PHYSICAL LABORATORY. discharge the paper was found to be blown out in rents with apparently pure dry nitrogen or hydrogen. The BY JOHN TROWBRIDGE, PROFESSOR OF PHYSICS, HARVARD UNIVERSITY. at points corresponding exactly to the forks or sinuosi- powerful… … into meal at the same time. The grinders are mov- necessarily of this size to prevent the sparks from pass- able and do not touch, so that instead of crushing the ing-around the edges of it. The plate had a small hole Fig. 1—AISLE OF BATTERY. grain and producing a flour, the starch only of which…
Internet Archive · Public domain (published before 1931). Free to use for anything.
![An illustration from Telephones and telegraphs: 1902 : [and Municipal electric fire alarm and police patrol systems] (1906)](https://img.insideoutlibrary.com/img/200/ia-cu31924022817674-78-31.webp)
