Young Woman in Classical Dress, Study for the Month 'Thermidor', c. 1804-1805, Louis Lafitte; Artist: Formerly attributed to Baron Fran?ois-Pascal-Simon G?rard, French, 1770 - 1837, 10 5/16 x 7 1/4 in. (26.2 x 18.4 cm) (image)19 3/4 ¡Ñ 15 3/4 in. (50.17 ¡Ñ 40.01 cm) (outer frame), Black chalk, partially incised,on paper, France, 18th century, In France in the 1790s, the Republicans used more than the guillotine to do away with the ancien r?gime. They went so far as to invent a new system of measures (the metric system), a new dress code, a new system of time (100-second minutes, 100-minute hours, 10-hour days), and a new calendar.