In unison with the division here made of the associating principles, it is easy to explain the character of three distinct orders of mind, which will of course appear widely different in the conversational displays of the social circle. There is, first, the _common mind_, associating its ideas together by palpable resemblance or contrast among them, and by the mere casual and loose contiguity in time and place. Secondly, _the poetical or sentimental mind_, associating principally by resemblance or contrast in the effects produced by objects or the emotions which they excite. And thirdly, the _philosophical mind_, associating principally by necessary contiguity in time and place, by cause and effect, premises and conclusions. Such a mind as the first, is most impressed with the details and occurrences around. It never ascends to the original contemplation of ideas and thoughts which belong to the region of philosophy and poetry. It may, it is true, recollect sometimes, distant and beautiful analogies, or even philosophical associations, but it is purely because it has heard these things spoken of by others, and not from original conception. Such a mind has no creative power of its own; as it receives so does it pour forth, without alteration. It has been well compared to the cistern into which water is poured; you have nothing to do but turn the cock and out it comes (as one of our newspaper editors recently observed, in relation to a different subject,) "water, dirt, sticks, bugs, pine tags and all!" Such a mind has no _productive power_ whatever. In this flood of details, you see no connecting principle like cause and effect, premises and conclusions, &c.--but this thing is remembered because it is like that. This fact is now related because it was spoken at the same time with that, or in the same place. Such an individual as this has, as Diderot expresses it, "une tête meublée d'un grand nombre de choses disparates," which he says resembles a library with mismatched books, or a German compilation garnished, without reason and without taste, with Hebrew, Arabic, Greek, and Latin. Such individuals as these are more pleasing and amusing to us in conversation, when the mind is not otherwise engaged, than most of us are willing to allow. They spread before us a promiscuous feast of neighborhood news, and like Mathews the comedian, although there be but one speaker, they give you the _sayings_, the _conjectures_, the _shrugs_, and the _winks_ of all the parties concerned, and thus give to their communications quite a dramatic effect. Barbers, midwives, seamstresses, hostesses, &c. cultivate this kind of association to the greatest pitch of perfection. Their professions may be said to demand it.