Centuries: 18th century - 19th century - 20th century
Decades: 1790s 1800s 1810s 1820s 1830s - 1840s - 1850s 1860s 1870s 1880s 1890s
Years: 1840 1841 1842 1843 1844 - 1845 - 1846 1847 1848 1849 1850
Arts, Sciences, Literature and Philosophy
... linen is produced; at one time, a stretched linen thread was the most reliable way to determine a straight line. Also see liner[?] and lining[?].
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