 ... is actually not so liable to scale or crack as when treated with a smooth-faced hammer of iron or steel. As soon as, in my experiments, I have in this manner reduced a plate almost to the desired thinness, I have with a smoother stone (like the back...  Some First Steps in Human Progress - Página 119por Frederick Starr - 1895 - 305 páginasVista completa - Acerca de este libro
 | 1893 - 926 páginas
...thinness, I have with a smoother stone (like the back or butt of a worn-out, well-polished diorite celt) supplied with a flexible handle, gone over both sides...side of his hammered sheet of parfleche. I have taken flat-faced pieces of fine sandstone and, laying the sheet of metal on a firm, level spot, with a buckskin... | |
 | 1894 - 488 páginas
...thinness, I have with a smoother stone (like the back or butt of a worn-out, well-polished diorite celt) supplied with a flexible handle, gone over both sides...side of his hammered sheet of parfleche. I have taken flat-faced pieces of fine sandstone and, laying the sheet of metal on a firm, level .Ian. 1894.] PRIMlTIVK... | |
 | Frederick Starr - 1901 - 288 páginas
...primitive Pueblos worked nodules of copper thus obtained by alternate hammering and annealing." Gushing further calls attention to the words used by Zunians...side of his hammered sheet of parfleche. I have taken flat-faced pieces of fine sandstone and, laying the sheet of metal on a firm, level spot with a buckskin... | |
 | 1894 - 482 páginas
...thinness, I have with a smoother stone (like the back or butt of a worn-out, well-polished diorite celt) supplied with a flexible handle, gone over both sides...larger irregularities and to partially smooth the surfacewhere pitted by the coarser maul: This may be done partly by hammering, partly by combined rubbing,... | |
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