Richard Devens, an efficient member of the committee of safety, soon received intelligence that the British troops were in motion in Boston, and were certainly preparing to go into the country. Shortly after, the signal agreed upon in this event was given, namely, a lantern hung out from the North Church steeple in Boston, when Devens immediately despatched an express with this intelligence to Menotomy and Lexington. All this while General Gage supposed his movements were a profound secret, and as such in the evening communicated them in confidence to Lord Percy. But as this nobleman was crossing the Common on his way to his quarters he joined a group of men engaged in conversation, when one said, "The British troops have marched, but will miss their aim!" "What aim?" inquired Lord Percy. "Why, the cannon at Concord." He hastened back to General Gage with this information, when orders were immediately issued that no person should leave town. Dr. Warren, however, a few minutes previous, had sent Paul Revere and William Dawes into the country. Revere, about eleven o'clock, rowed across the river to Charlestown, was supplied by Richard Devens with a horse, and started to alarm the country. Just outside of Charlestown Neck he barely escaped capture by British officers; but leaving one of them in a clay-pit, he got to Medford, awoke the captain of the minute-men, gave the alarm on the road, and reached the Rev. Jonas Clark's house in safety, where the evening before a guard of eight men had been stationed to protect Hancock and Adams. It was midnight as Revere rode up and requested admittance. William Monroe, the sergeant, told him that the family, before retiring to rest, had requested that they might not be disturbed by noise about the house. "Noise!" replied Revere; "you'll have noise enough before long--the regulars are coming out!" He was then admitted. Dawes, who went out through Roxbury, soon joined him. Their intelligence was "that a large body of the King's troops, supposed to be a brigade of twelve or fifteen hundred, had embarked in boats from Boston, and gone over to Lechmere's Point, in Cambridge, and it was suspected they were ordered to seize and destroy the stores belonging to the colony, then deposited at Concord."