LSE4093743 Christian Huyghens observing 'the inclination to movement' or body elasticity -in 'Physique Populaire' by Emile Desbeaux, 1891 by French School, (19th century); Private Collection; (add.info.: Christian Huyghens observing ??s??? the inclination to movement?????? or body elasticity -in ??s??? Physique Populaire?????? by Emile Desbeaux, 1891); Photo ?? Leonard de Selva; French, out of copyright.