DECEMBER 4 1869.1 contents, OSCILLATIONS, WATER, STEAM BOILERS, DIRTY SHOPS, SLOVENLY WORKMEN, WORK PERFORMED RY, HUMAN HEART ESTI MATED, HORSE POWERS, 4-4 ANNOUNCEMENT FOR 1870.A SPLENDID WORK, ART, CASH PREMIUMS, BE GIVEN, scientific american, 1869-12-04, science, scientific, sciences, mind, health, tech, sustainability, publication, lab, sciam, sa, scientist, research, american, experiment, education, discovery, technology, analysis, magazine, u.s., insights, developments, weekly, broadsheet, inventor, innovation, inventions, patented, industrial revolution, emerging, trends, monthly magazine, united states, engravings, curious works, paper, discover, Scientific Paper, Weekly Journal, Practical Information, Art, Science, Mechanics, Chemistry, Manufactures, research, education, scientist, innovation, 19th century, vintage, america, Rufus M. Porter, 1845, journal, academic, newspaper illustrations, retro style, old-fashioned, media illustrations, victorian style, news, newspaperheadline, 19th century style, illustration, journalism

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