[…] the remaining Air was not able to counterballance the Mercurial Cylinder, […]
1659 December 30 (date written), Robert Boyle, “[Experiment 17]”, in New Experiments Physico-Mechanicall, Touching the Spring of the Air, and Its Effects, (Made, for the Most Part, in a New Pneumatical Engine) […], Oxford, Oxfordshire: […] H[enry] Hall, printer to the University, for Tho[mas] Robinson, published 1660, page 118