On Saturday night at about 10.45 an alarm of lire was raised, and it soon became known that the building occupied by Mr. Vail, tailor, Devon-street, was on lire. A large crowd of persons gathered in front of the premises iv a bhort time to witness the con llagration, or to assist in sub luing the llauies. The fire was first discovered by ' Mrs. Barton, who lives at the roar of Vail's premises, aud also by Mrs. Revoll, of Devon-street, who noticed the glare and smoke ami informed her husband, when he immediately gave the alarm. Mrs. Wartcn's sou at the same time went to the Imperial Hotel (adjoining Vail's shop) and gave tho alarm there. Constables Roach and Ncvill were quickly o:i the scene, aud after an entrance had been effected through the back door of the premises, Con stables Roach and Ncvill finding thero were no indications of fire down stairs, immudia tcly proceeded to the upper story, and dis covered that the fire was in tho machine-room. The flames were running up tho side, the canvas and paper of the wall being on tire. Constable Roach took oft his top-coat, and tried to extinguish tho il.-iiiics, but this proved to be ineffectual, and he cried out for water. In the meantime a number of willing hands had commenced to procure buckets, tubs, cans, &c., from the Im perial Hotel, and as there was a splendid supply of water to be obtained from a rain barrel in the yard of the hotel, and also from a pump, botli being only a few yards from the back door of Mr. Vailo'.s shop, no time was lost before the llamcs were extinguished. Air. J. Hoskin, Mr. J. Oallaghan, aud Mr. Sole were among the first oil the spot, and assisted the constables iv throwing the iir.st tub of water ou the ilames. Everyone was eager to render all the aid possible, and by the strenuous exertions of those present the lining of the partition was torn down and tho iire quickly extinguished. Inspector liulle i was on tho spot immediately after the alarm was given, and displayed great judgment iv the manner ho supervised the operations for ex tinguishing the flames. Mr. Humphries, captain of the Fire Brigade, Mr. Drew, and Air. Butterworth were also conspicuous by their exertions. 