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 them, which threatened to drive sperm-oil out of the market: "Dear me, the poor whales! What will they do?"

There must also be complete unconsciousness in the perpetrator of a bull. "The pleasure," says Sydney Smith, "arising from bulls proceeds from our surprise at suddenly discovering two things to be dissimilar in which a resemblance might have been suspected;" but ordinary wit creates a sudden surprise at a resemblance which could not have been suspected between two things. Perhaps the best bull was practically perpetrated by the old lady in Middlebury, Wis., who crossed over a bridge that was marked "Dangerous" without seeing the sign. On being informed of the fact on the other side, she instantly turned in great alarm and re-*crossed it.

The wit which produces laughter cannot be analyzed without a mental process: but that is an after-thought and laughter anticipates it; as when Mark Twain, writing upon Franklin, says, "He was twins, having been born simultaneously in two houses in Boston." There is an unconscious organic assumption that both houses, since people insist upon both, must have been the spots of his birth. If so, the births in two houses must have been simultaneous, but the two Franklins not identical. Of course, then, they must have been twins. At least, this is the best that can be done with the historical material. But I am reminded of a famous wit, who, after viewing the Siamese Twins for a while, quietly remarked, "Brothers, I suppose."