THOMAS (1726-1798).-Naturalist and traveller, _b._ in Flintshire, and _ed._ at Oxf., was one of the most distinguished naturalists of the 18th century, and _pub._, among other works on natural history, _British Zoology_ (1768), and _History of Quadrupeds_ (1781). In literature he is, however, best remembered by his _Tours in Scotland_ (1771-75