The boiler was rent all along one side, and the reaction of the issuing contents caused it to be thrown some yards away, and one of the ends became altogether detached, and flew to a considerable distance. The plates were so thinned by corrosion, that they gave way on a very slight increase of pressure during a temporary stoppage of the engine. _No. 68. Glasgow. December 12th. 1 killed, 1 injured._ This Boiler was 14ft. long, with hemispherical ends, and 7ft. diameter, 30 lbs. The cause of the explosion was over-pressure and thinness of plates, wasted by corrosion. _No. 69. Manchester. (Fig. 32.) December 15th. 5 injured._ [Illustration: _Fig. 32._] Two Tube Cornish, 24ft. long, 6ft. 6in. diameter, tubes 2ft. 8in. diameter, 7/16 inch plates, 50 lbs. The boiler was fired in each of the tubes in the ordinary way, and also the heat from two furnaces passed from the back, one on each side of the outside shell. Both the internal furnaces collapsed, until the crowns almost touched the fire bars, as shown in dotted lines, but without fracture. The back of the shell, on the right side, had evidently been overheated, and had rent along the centre of a bulge, and this rent had extended along the line of rivets of the transverse seam on each side, allowing two rings of the plates of the shell to open out flat as shown. There was a bulge on the plate, on the right side of shell, corresponding with the one which parted on the opposite side. The cause of the explosion was overheating of the plates from shortness of water. _No. 70. Aberdeen. December 24th. 1 injured._ No particulars have been obtained. BOILER EXPLOSIONS IN 1867. _No. 1. Hull. January 2nd. 1 killed, 1 injured._ A small Boiler to heat a bath. It exploded, causing great damage, because the connecting pipes were frozen. All such boilers should have a proper safety valve. _No. 2. Durham. (Fig. 1.) January 2nd. 3 killed, 3 injured._ [Illustration: _Fig. 1._] Plain Cylinder, 33ft. long, 6ft. diameter, 33 lbs. pressure. Only set two days, but was old and deteriorated, and had worked before at another place. It had been turned 1/4 round, and old fitting-holes stopped. First rent was supposed to be in a seam at front end, over the fire. Main portion of shell was driven back, and front end forward, and torn in its flight. The cause of explosion was, that the seam in front was overheated and injured, and also incautious working without a steam gauge. _No. 3. Sheffield. (Fig. 2.) January 2nd. 1 killed, 4 injured._ [Illustration: _Fig. 2._] One Tube externally fired, 30ft. long, 6ft. 6in. diameter, with dished ends. Tube 2ft. 9in. diameter, slightly oval. Pressure 60 lbs. Tube collapsed sideways from end to end, because it was not strengthened by hoops or other means, which were the more needed, because it was slightly oval, and the longitudinal seams were nearly in one line.