A preorbital vacuity of such dimensions as to exclude the lachrymal bone from articulation with the nasal.
The invention of the barometer and Torricelli's explanation of the vacuity above the mercury column placed before the members of the Florentine academy a ready method of obtaining vacua; for to exhaust a vessel it was only necessary to join, by means of a tube provided with stopcocks, the vessel to a barometer tube, fill the compound vessel with mercury and then to invert it in a basin containing this liquid, whereupon the mercury column fell, leaving a Torricellian vacuum in the vessel, which could be removed after shutting off the stop-cocks.
In the skull the gland-pit is shallow, and the vacuity of moderate size; the nasal bones are well developed, and much expanded at the upper end.
Adherents of the Yoga philosophy and the system of ascetic practices enjoined by it with the view of mental abstraction and the supposed attainment of superhuman powers - practices which, when not merely pretended, but rigidly carried out, are only too apt to produce vacuity of mind and wild fits of frenzy.
But, at last, when turning to the eastward, the Cape winds began howling around us, and we rose and fell upon the long, troubled seas that are there; when the ivory-tusked Pequod sharply bowed to the blast, and gored the dark waves in her madness, till, like showers of silver chips, the foam-flakes flew over her bulwarks; then all this desolate vacuity of life went away, but gave place to sights more dismal than before.
In both genera, as in the okapi, there is a vacuity in front of the orbit.