FOURTH BRIGADE.—Brigadier-General Garvock, commanding; Hon. Capt. Chetwynd, Aide-de-Camp; Capt. Jones, 20th Foot, Major of Brigade. 1st Battalion—Lieut.-Col. Lord Elcho, 15th Middlesex. 2nd Battalion—Lieut.-Col. Brewster, 23rd Middlesex. 3rd Battalion—Major Richards, 3rd City of London and 32nd Middlesex. 4th Battalion—Lieut.-Col. Lord Grosvenor, 22nd Middlesex, 1st Battalion. 5th Battalion—Lieut.-Col. Lord Gerald Fitzgerald. 22nd Middlesex, 2nd Battalion. Upon the arrival of the various corps, they were marched to their several places of rendezvous, on the Level, St. Peter’s Church and North Steine Enclosures, the Pavilion Grounds, and the Steine, where they partook of refreshments. At 11 o’clock the “assembly” was sounded, and very soon after the whole of the corps were on their march to the Race Hill, by way of the Marine Parade and Elm Grove, the Divisions meeting again in White Hawk Valley, whence they paraded down the Course and passed in Review opposite the Grand Stand, before Lord Clyde, the Earl of Chichester—Lord Lieutenant of the County,—and Lord Cardigan, passing out at the south end of the Course, and then descending to their original position in the Valley. The field evolutions took place principally on White Hawk Down, and were eminently successful, and the whole of the arrangements of the day, civil and military, were a practical demonstration of the facility with which troops might be moved towards a threatened point on the particular railway which would be most likely to be required for such a duty in an actual case of emergency. On the morning of the Review, 6,922 Volunteers were despatched from London Bridge in two hours and 41 minutes, and 5,170 from the Victoria Station in two hours and 20 minutes, without difficulty. They were conveyed in 16 trains, each composed of an engine and tender and 22 vehicles, and each carrying on an average 20 officers and 735 men; and they reached Brighton in an average of 2 hours and 28 minutes from the time of starting. The Brighton Company borrowed on this occasion 72 carriages from three neighbouring companies, and 79 carriages also brought Volunteers over their railway, from other lines; but they had to provide for their ordinary passenger-traffic on that day, as well as for the Easter Monday traffic to the Crystal Palace, which was very considerable, and to convey upwards of 2,000 Volunteers along the south coast from the several stations on their own line. Indeed, the total number of passengers who travelled upon the London, Brighton, and South-Coast Railway on that day was 132,202, including Volunteers and the holders of season and return tickets.