From hand to hand, the buckets went in the deepest silence, only broken by the occasional flap of a sail, and the steady hum of the unceasingly advancing keel.
If the wing of a gannet, just shot, be removed and made to flap in what the operator believes to be a strictly vertical downward direction, the tip of the wing, in spite of him, will dart forwards between 2 and 3 ft.
Let this potential be denoted by V, and let v be the potential of the guard plate and the aluminium flap. This last potential is maintained constant by guard plate and flap being part of the interior coating of a charged Leyden jar.
The limits of the large area formed by the flap over the head and neck (ecr) can be traced, and we note the anal i - papilla showing through FIG.
The free edge of the left half of the mantle-skirt b is represented as a little contracted in order to show the exactly similar free edge of the right half of the mantle-skirt c. These edges are not attached to, although they touch, one another; each flap (right or left) can be freely thrown back in the way carried out in fig.
The outer ear lies in a recess which can be closed tightly by a dorsal flap of skin.
The rhopalia are lodged in the notches be tween the marginal lobes of the umbrella, and each rhopalium is covered over by a little protecting flap or lappet.
But in his joy at the enchanted, tacit acquiescence of the mate, Ahab did not hear his foreboding invocation; nor yet the low laugh from the hold; nor yet the presaging vibrations of the winds in the cordage; nor yet the hollow flap of the sails against the masts, as for a moment their hearts sank in.
Pf, Posterior flap or diaphragm of Newport.
This done he extends his enormous pinions 2 and sails majestically along, seldom deigning to flap his wings, the breeze doing the work for him.