And rising seek the vacancy above.--
So when the Mother, bending o'er his charms,
Clasps her fair nurseling in delighted arms;
375 Throws the thin kerchief from her neck of snow,
And half unveils the pearly orbs below;
With sparkling eye the blameless Plunderer owns
Her soft embraces, and endearing tones,
Seeks the salubrious fount with opening lips,
380 Spreads his inquiring hands, and smiles, and sips.


[_Lift her ponderous waves_. l. 366. The invention of the pump is of
very antient date, being ascribed to one Ctesebes an Athenian, whence it
was called by the Latins machina Ctesebiana; but it was long before it
was known that the ascent of the piston lifted the superincumbent column
of the atmosphere, and that then the pressure of the surrounding air on
the surface of the well below forced the water up into the vacuum, and
that on that account in the common lifting pump the water would rise
only about thirty-five feet, as the weight of such a column of water was
in general an equipoise to the surrounding atmosphere. The foamy
appearance of water, when the pressure of the air over it is diminished,
is owing to the expansion and escape of the air previously dissolved by
it, or existing in its pores. When a child first sucks it only presses
or champs the teat, as observed by the great Harvey, but afterwards it
learns to make an incipient vacuum in its mouth, and acts by removing
the pressure of the atmosphere from the nipple, like a pump.]


"CONNUBIAL FAIR! whom no fond transport warms
To lull your infant in maternal arms;