The top of the fire grate on the right side rent longitudinally, and the upper part of the shell consisting of four rings of plates, and also the top of the fire place opened out and blew away to a considerable distance. The front end also blew away. The bell-mouth of the tube was blown to the front, and the tube which remained in the back part of the shell collapsed upwards. The cause of the explosion was most likely the intrinsic weakness of boilers of this shape, especially over the fire, where the top is only retained in its shape by numerous stays. The boiler had been very frequently repaired, at this the weakest place, and its strength had been thus so reduced as to make it unable to bear even a few pounds more than the ordinary working pressure. The whistle was found to have been gagged by hemp, carefully inserted, so that there is ground for supposing there had been intentional unfair usage. _No. 3. Blyth. (Fig. 2.) January 8th. 1 killed 1 injured._ [Illustration: _Fig. 2._] Marine, 20ft. long, and 5ft. diameter, with internal fire place and return flue, 14 lbs. There were altogether three rents in the tube over the fire, as a small band was held in its place by a stay from the tube to the shell. The escaping contents scalded those near, but no damage was done to anything but the boiler. The cause was stated to be shortness of water. There was no water gauge. _No. 4. London. January 9th. 1 killed._ One tube Cornish, 28ft. long, 6ft. 6in. diameter, with one tube 3-6 diameter, 3/8 inch plates, 45 lbs. The tube collapsed in an incline direction from weakness without strengthening rings. The appearance after explosion was nearly the same as that shown in sketch given at No. 12 explosion. _No. 5. Glasgow. (Fig. 3.) January 13th. 4 killed, 4 injured._ [Illustration: _Fig. 3._] Two tube Cornish, 22ft. 3in. long, and 7ft. 7in. diameter, 3/8 inch plates, tubes 2ft. 7in. diameter, 40 lbs. About 8ft of the back portion of the shell was torn off, leaving the tubes and ends intact. The cause of the explosion was considered to be excessive pressure, but how accumulated did not transpire. It is most natural to expect that there must have been corrosion under the bottom to cause the first rent. _No. 6. Coatbridge. January 17th. 1 injured._ Cornish. No details have been obtained. _No. 7. York. (Fig. 4.) January 18th. 1 killed, 2 injured._ [Illustration: _Fig. 4._]