There is a spirit of childishness lurking somewhere in Harvard, that is doing its best to bring discredit upon her. Its presence was first indicated this year, by the defacing of the Harvard statue and the chapel; its last exhibition has been even more foolish and dangerous. While England is being terrified by dynamite explosions, some men seized upon the idea that a little sensation of the kind would be interesting here. Accordingly, last week, a large cannon cracker was fired off at midnight in front of Matthews. As this did not produce the desired effect, another one was tied to a door knob in Thayer and went off, scorching the door, and covering the floor with burning wadding. The same day, a gentleman, while pouring coal on his fire was surprised and alarmed by an explosion which scattered his fire to some distance; and on making investigations, he found that gun powder had been placed in his coal. He is naturally very indignant, and vows vengence on the perpetrators of the joke. These performances are so childish that we are astonished that men can be found in Harvard, young enough to commit them. However, if they must fire off crackers before the Fourth of July, let them at least go out on Jarvis Field, where they can amuse themselves without disturbing anyone else.