fire-extinguisher illustrated in Fig. 1, the Besides the tests on general efficiency, a few special chemicals contained in one cylinder are first used ; and tests have been made. Among the results of greatest when these are exhausted, the contents of the second interest are those obtained from the… … ference to the instructor, librarian and the most important factor affecting the effi- A NEW CHEMICAL FIRE-EXTINGUISHER. pupil. This catalogue, which is now ready ciency of a wheel, and that the amount of for distribution, is published under the inflation would hide all other possible auspices of…
Internet Archive · Public domain (published before 1931). Free to use for anything.
