Let us grant here one brief parenthesis of respect and astonishment to the scientific knowledge and philological acumen of a distinguished graduate of Yale College, and member of Congress, whom we encountered on our travels. Hearing us speak of mosaic granite, a rock occurring in Woodbridge, to which we had given this name, from the checker-like arrangement of its felspathic ingredient, he concluded that we attributed its formation to the era of Moses, and asked Percival what evidence he had for such an opinion. Small blame to him, perhaps, for the blunder, but it seemed a very droll one to geologists.
In Greenwich, the extreme southwestern town of the State, we encountered an incident to which my companion would sometimes refer with a slight degree of merriment. In general, he was no joker, no anecdotist, and had but a feeble appreciation of droll sayings or humorous matters of any kind. But in Greenwich he heard a memorable phrase. Among the tavern-loungers was a man who had evidently seen better days, and who, either for that reason or because of the large amount of rum he had swallowed, entertained a lofty opinion of himself, and discoursed _de omnibus rebus_ in a most consequential fashion. He soon made himself a sort of medium between ourselves and his fellow-loafers. Overhearing us say that we wished to pass the New York frontier for the sake of tracing out the strata then under examination, he proceeded with much pomposity to declare to his deeply curious auditory, that "it was his opinion that the Governor of the State should confer upon these gentlemen _discretionary powers_ to pass the limits of Connecticut, whenever and wherever, in the prosecution of their labors, the interests of science required them so to do." After this, we rarely crossed the State line but Percival observed, "We are now taking advantage of our discretionary powers."
Of the few stories Percival told me, here is one. In one of our country-places, a plain, shrewd townsman fell into chance conversation with him, and entertained him with some account of a neighbor who had been seized with a mania for high Art, and had let loose his frenzy upon canvas in a deluge of oil-colors. If I mistake not, Percival was invited to inspect these productions of untaught and perhaps unteachable genius. They were vast attempts at historical scenes, in which the heads and legs of heroes were visible, but played a very secondary part in the interest, compared with a perfect tempest of drapery, which rolled in ungovernable masses, like the clouds of a thunder-storm.