f mining accidents, such as his lamp with him without danger; and to retain the free occur almost weekly in the Pennsylvania mining districts, atmospheres, affords a supply capable of lasting half an use of his arms. Of the competing apparatus sent in, the but when, for instance, a house is on Are,… … to every 3,000. Austro-Hungarian Empire, population 35,- flexible tubes forms a great obstacle to its extended appli- Fig. 7.—Sohaltz'8 A8rophore. 904,435, and 14,861 doctors, being 1 physician to every 3,500 cation. In 1875, the apparatus invented by M. Rouquayrol, and regulating ValVe, which…
Patents · Water · Color · Going · Apparatus · Patent office · Iron · Water power · Supreme Court · Scientific American · American supplement · Wrought iron · Wooden spring · Fire proof · India rubber · Simple method
Internet Archive · Public domain (published before 1931). Free to use for anything.
