Section 2. Article two hundred ninety-five of the Revised Penal Code is hereby amended to read as follows:

"Art. 295. Robbery with physical injuries committed in an uninhabited place or by a band. — If the offenses mentioned in the next preceding article shall be committed in an uninhabited place or by a band, or by attacking a train, car, vehicle, vessel or craft, or by entering any compartment thereof or, in any manner, taking the persons therein by surprise in the respective conveyances, the offender shall be punished by the maximum period of the proper penalties.

"In the same cases, the penalty next higher in degree shall be imposed upon the leader of the band."