Read it through once

[Footnote II.27: _For if the sun breed maggots in a dead dog, being a god, kissing carrion,----Have you a daughter?_] _i.e._, Hamlet having just remarked that honesty is very rare in the world, adds, that since there is so little virtue, since corruption abounds everywhere, and maggots are _bred_ by the sun, which is a god, even in a dead dog, Polonius ought to take care to prevent his daughter from walking in the sun, lest she should prove _"a breeder of sinners;"_ for though _conception_ (understanding) in general be a blessing, yet as Ophelia might chance to _conceive_ (to be pregnant), it might be a calamity. Hamlet's abrupt question, _"Have you a daughter?"_ is evidently intended to impress Polonius with the belief of the Prince's madness.--MALONE.]