centuriespast:

Washington Allston
American (Georgetown, SC 1779 - 1843 Cambridge, MA) 
Mensuration, Problem VI, c. 1797-1799

Drawing
Brown ink on ivory laid paper
irregular: 23.6 x 19.2 cm (9 5/16 x 7 9/16 in.) 
Harvard Art Museums/Fogg Museum

Hands up if you read the title as “Menstruation” and that made you REALLY confused about the diagram of a dude standing on the lady looking at point A on the hillside.

#HandUp