Letter 43 of January 5, 1685 No. 2 | Opera Omnia

Particles of salt in vinegar in which crabs' eyes had lain; figures somewhat rectangular at the base and rising to a pyramid.
Deelen van sout op den edik [ed: azijn] waar in kreeften oogen hadde gelegen; figuirtgens welkers grond een weijnig lang vierkant was, lopende piramidaal op.
Origin of specimen:
vinegar from his cellar