"The present superincumbent mass is about 20 feet in thickness."

The temperature of springs in northern regions, when the surface water is frozen, is higher than the mean temperature of the superincumbent atmosphere; and in the countries from the south of Europe to the Tropic, the temperature of springs is lower than that of the medium temperature of the atmosphere.

The air oppressed him like a leaden shroud, and the energies of his soul seemed for once on the point of sinking beneath the superincumbent burden.

Thousands of the birds alighted on the trees, the branches of which snapped and crackled fearfully under the superincumbent load; those of our party who were armed, continued to fire and load as fast as they possibly could.

This is owing chiefly to the slight dimensions of the piers, which are smaller in proportion to the span of the arches they support than those of any other bridge in England; but this slight appearance does not, we understand, detract in any degree from their strength, or from the durability of the superincumbent structure.

It would be proper to apply some correction to this computation, which would represent the increased resistance due to the immersion of the screw in the water; for a column of water cannot be moved in the direction of its axis beneath the surface, without giving motion to the superincumbent water, and the inertia of this superincumbent water must, therefore, be taken into the account.