Twentieth century hand-book for steam engineers and electricians, with questions and answers .. (1905)
Swingle, C. F. [from old catalog], Horstmann, Henry Charles, 1858- [from old catalog], Tousley, Victor Hugo, 1875- [from old catalog] · Chicago, F. J. Drake & co. · leaf 589
FIGURE 96. FIGURE 97. FIGURE 98. which fasten it lo the frame, and lifting it off thelower support. The carbons used in arc lamps are extremely hardand dense. They are made from a mixture of pow-dered gas house coke, ground very fine, and a liquidlike molasses, coal tar, or some similar…
