Note 98 — Chapter VIII · The Siege of Boston.
Reading edition
“In fact they (the British) never meditated an attack, unless reinforcements should arrive. General Gage wrote to Lord Dartmouth, that such an attempt, if successful, would be fruitless, as there were neither horses nor carriages for transportation, and no other end could be answered than to drive the Americans from one stronghold to another.”—Sparks’ Life of Washington, p. 146.