Oottsagb on a Bor.—Tom Brlgman, an old Work-bouse rat, was arrested last night, at Streng’s Hall, by Officer Hamel, and locked up in tbe Tenth District Station, upon oomplaintof John Biggs, of Cooper street, between Apple street and Spring Grove avenue, Twenty-fllth Ward, for committing sodomy upon a son of Mr. Biggs, six or seven years old, on Wednesday night. The boy is said to have been brutally treated by the wretch. Brigmau has been out of the Work-bouse only about a week. He olaims that he was drunk.