It is doubtlessly a great source of annoyance and inconvenience for those who rely upon gas-light by which to do their evening reading, to have the light grow so dim that they can scarcely distinguish the letters before them. Such a state of affairs must, however, be borne with the best grace possible for the next two or three days. A leak has been discovered in one of the principal gas mains in Cambridgeport and while this is being repaired, the college dormitories are dependant upon the gas supply brought over from East Cambridge. The work of repairing has been rendered doubly difficult by the heavy rain of day before yesterday. A word of warning which the Bursar has taken great pains to have well understood, may not be out of place here. As this precarious supply of gas may be cut off at any moment, every one should remember not to leave the gas burning in his room. An ounce of precaution in heading this admonition may save an infinite amount of trouble, even if not something far worse in the way of an explosion.