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Scientific American, Vol. 84, No. 6 (1901) (1901)
leaf 3
ent TUBULAR LENS FOR LAMPS, ing in, the sides of the excavation are shored up with us the picture herewith reprojluced, cracked so curious- boards and cross braces, the shoring being removed as ly when ink was poured into it. lens around the lamp-chimney opposite the flame and the construction of… … excavation. In these trenches a water- Lanai to the island of Maui. © 1901 SCIENTIFIC AMERICAN, INC.Internet Archive · Public domain (published before 1931). Free to use for anything.
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