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Scientific American, Vol. 21, No. 8 (1869) (1869)

leaf 3

An illustration from Scientific American, Vol. 21, No. 8 (1869), 1869, leaf 3
a. The length of the road blue ground with indigo, then galling and working in sul- which the logwood is “struck” of an intense black, and is two miles and thirtecn-sixteenths. fixed. Velveteens are dyed black by reiterated The heaviest grade is thirteen inches to the passages in logwood and green… … was published in our issue of Aug. 7th. It is avoided, or if they occur that their cause may be well worth preserving as a souvenir of one of the discovered. —Divtionary of Dyding and Calico Print- most distinguished engineers of the age. ing. bark, and other similar substances were also employed ;…

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