HARRIES, C.J. :- This is a petition for revision of an order made by a learned Presidency Magistrate convicting the petitioner under S. 21(4), West Bengal Security Act, 1950 and sentencing him to simple imprisonment for one month and five days.

2. The petitioner was served with an externment order under S. 21(1)(a), West Bengal Security Act, 1950 forbidding him to remain within the town of Calcutta. The order was served on him on 5th April 1950 and he was given 24 hours time to leave the Calcutta area. According to the prosecution the petitioner was found at his residence at 5/1 Kashinath Rose Lane, Calcutta on 7th April 1950 and accordingly it was alleged that he had contravened the order externing him from the city of Calcutta. The order appears to have been signed by the Commissioner of Police and the service of the order was duly proved. The evidence that the petitioner was in Calcutta on 7th April 1950 was accepted and it has not been challenged.

3. The petitioner filed a written statement in which he stated that he was a firm believer in Gandhian ideals and had striven for communal unity throughout his life and that it was unthinkable that he should take part in any su