Malaspina (right) and José
de Bustamante, performing an experiment with the simple
pendulum. Drawing by Giovanni
Ravenet (1794), Museo
Naval, Madrid, ms. 1726-36 (see Carmen Sotos Serrano: Cat.
no. 71). From this version are derived many other drawings,
oil paintings and engravings.
Image courtesy of the Centro di Studi Malaspiniani, Mulazzo, Italy.