Unprovoked Assault upon a Juror.- Tuesday night, while the jury empannelled(sic) to try the case of Daniel Roberts, charged with the murder of John Wolfe, were about retiring from the National Hotel, where they had taken their meals, being in charge of bailiffs Simonds and Fayman. One of them, Mr S. Sylvester, was assaulted and beaten by a lieutenant, said to be an officer of Gen. Butler's Staff. Mr. S. was wholly unprepared for any each such attack, and was roughly handled before he could be rescued. The assault was wholly unprovoked, and it was a matter of wonder among the jurors what imaginary offence had caused it. Last night a warrant was issued bv Justice Donn for the arrest of the lieutenant, but the officer failed to find him. The affair will be reported to headquarters.
-Evening Star (Washington, D.C.)January 23, 1862