kept in it until they are completely saturated when they are taken out and dried and found to have acquired a marble like hardness. A day or two after this operation tile castings are slightly heated and covered over with a thin coat of Canada balsam dissolved 1mm tur pentine after which they are kept warm until the turpentine is driven off. Various colored substances may be used along with the mate rials specified to color the artificial marble such as indigo for blue and other substances for other colors. The marble may also be streaked and beautifully variegated., scientific american, 1851-05-31
Keywords:
kept, completely saturated, out, dried, acquired, marble, hardness, day, two, operation tile castings, slightly heated, covered, thin coat, Canada balsam dissolved 1mm tur pentine, kept warm, turpentine, driven off, Various colored substances, mate rials specified, color, artificial marble, indigo, blue, substances, colors, marble, streaked, beautifully variegated, scientific american, 1851-05-31, 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
Image ID:
The watermark in the image will not appear on the final download.