Noun
(archaic) In the 19th century, engineering and other mechanical fields of expertise (comparable to performing arts and the fine arts).
(archaic) Weaving, blacksmithing, war, navigation, agriculture, hunting, medicine, and the ars theatrica.
Source: en.wiktionary.orgThe Negroes have little invention, but strong powers of imitation, so that they readily acquire mechanic arts. They have a great talent for music, and all their external senses are remarkably acute. Samuel George Morton
Iron and heat are... the supporters, the bases, of the mechanic arts. Nicolas Léonard Sadi Carnot