Exchange me for a goat,

When I shall turn the business of my soul

To such exsuffolate and blown surmises,

Matching thy inference]

This odd and far-fetched word was made yet more uncouth in all the editions before Hanmer's, by being printed, exsufflicate. The allusion is to a bubble. Do not think, says the Moor, that I shall change the noble designs that now employ my thoughts, to suspicions which, like bubbles blown into a wide extent, have only an empty shew without solidity, or that in consequence of such empty fears, I will close with thy inference against the virtue of my wife.

III.iii.188 (439,4) Where virtue is, those are most virtuous] An action in itself indifferent grows virtuous by its end and application.

III.iii.201 (439,6)

I know our country disposition well;

In Venice they do let heaven see the pranks]

Here Iago seems to be a Venetian.