. Bulletin. Science. decade later, when news of its invention crossed the Channel to England, this linkage excited a flurry of interest, and variations of it occupied mathematical minds for several years. For at least 10 years before and 20 years after the final solution of the problem, Professor Chebyshev,'^ a noted mathematician of the University of St. Petersburg, was interested in the matter. Judging by his published works and his ' This is tile Library of Congress spelling Figure 17.âStraight-line linkage (be- fore 1841) attributed to Richard Roberts by Robert Willis. From A. B. Kempe, Ho
. Bulletin. Science. decade later, when news of its invention crossed the Channel to England, this linkage excited a flurry of interest, and variations of it occupied mathematical minds for several years. For at least 10 years before and 20 years after the final solution of the problem, Professor Chebyshev,'^ a noted mathematician of the University of St. Petersburg, was interested in the matter. Judging by his published works and his ' This is tile Library of Congress spelling Figure 17.âStraight-line linkage (be- fore 1841) attributed to Richard Roberts by Robert Willis. From A. B. Kempe, How to Draw a Straight Line (London, 1877, p. 10).. ,/.â /., ./â //,â /,/,,, /,ââ/ ./,â /'/.u. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Smithsonian Institution; United States. Dept. of the Interior; United States National Museum. Washington, Smithsonian Institution Press, [etc. ]; for sale by the Supt. of Docs. , U. S. Govt Print. Off
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