We have undoubted intelligence, that the man of war lately arrived in Hampton road is the Roebuck, of 44 guns, capt. Hammond, lately from England, but last from Halifax, in Nova Scotia. She landed at that place Marriott Arburthnot, esq; formerly commander of the Garland ship of war, on this station, who is appointed commissary of the king's stores, and commodore, at Halifax. She brings intelligence of things being in a train of accommodation at home, every one seeming heartily disposed to forward so benevolent and desirable a purpose, by placing us as we were at the end of the last war. It is to be hoped, likewise, should the ministry be really in earnest to sheath the sword, that they will, without hesitation, (having been the aggressors) pay costs, or grant an equivalent.