Thermodynamics and motive power. It marked the start of thermodynamics as a modern science. The first thermodynamic textbook was written in 1859 by William Rankine, originally trained as a physicist and a civil and mechanical engineering professor at the University of Glasgow. The first and second laws of thermodynamics emerged simultaneously in the 1850s, primarily out of the works of William Rankine, Rudolf Clausius, and William Thomson (Lord Kelvin). The foundations of statistical thermodynamics were set out by physicists such as James Clerk Maxwell, Ludwig Boltzmann, Max Planck, Rudolf Clausius and J. Willard Gibbs. During the years 1873-76 the American mathematical
19th century in ichnology "giant" trackmaker was recognized by paleontologists Joseph Le Conte and Othniel Charles Marsh as a giant ground sloth, possibly of the genus "Mylodon". 1802 1820s Late 1820s 1828 1831 1834 1835 1836 1842 1843 1845 1846 1847 1848 1850 1851 1852 1854 1858 1860 1862 1864 1865 1877 1879 1880 1884 1886 1889 [[:Category:1890s in paleontology|1890s]] [[1894 in paleontology|1894]] [[1895 in paleontology|1895]] [[Category:19th century in paleontology]] [[Category:Ichnology]] [[Category:Paleontology timelines|Ichnology]] 19th century in ichnology The 19th century in ichnology refers to advances made between the years 1800 and 1899 in the scientific study of trace fossils, the preserved record of the