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Scientific American, Vol. 14, No. 20 (1866) (1866)

leaf 4

An illustration from Scientific American, Vol. 14, No. 20 (1866), 1866, leaf 4
ays the case. and are, in many ways, not necessary to dwell upon, paper. Slightly overprint. Wash in two or three The saw should range into the carriage half an inch a weariness and vexation of spirit. changes of water,and tone in a gold bath made in twenty feet. The mandrel should have nearly one-… … collodion so much fine precipitated chalk as will make a covering so thick as to prevent the plate from being seen through it. It should be poured on in the same manner as ordinary collodion, and care inches from the center for hard wood, and ten inches taken to prevent lines from being formed.…

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