One of eight. Plain Cylinder, 30ft. long, 6ft. diameter, 3/8 inch plates, 35 lbs. pressure. The plates were arranged longitudinally. Boiler had worked 27 years, and was much deteriorated, and gave way at an old fracture over the grate, and was torn into 4 pieces, which were thrown a great distance. _No. 21. Huddersfield. (Fig. 13.) June 20th. 1 killed, 6 injured._ [Illustration: _Fig. 13._] One tube Cornish, 24ft. long, 6ft. diameter. Tube 3ft. 3in. diameter, 3/8 inch plates, 40 lbs. pressure. The seams were arranged diagonally, but the rents had not followed the seams, but had torn the plates. The shell gave way where extensive corrosion had reduced the plates to 1/8 inch in thickness, and all the shell was blown off, and the tube thrown over and turned end for end. _No. 22. June 22nd. none injured._ Two tube Cornish, 27ft. long, 7ft. 6in. diameter. Tube 3ft. diameter, 7/16 inch plates, 70 lbs. pressure. Left hand tube collapsed from end to end owing to its weakness without strengthening rings. _No. 23. Halifax. July 9th. 6 injured._ Two tube Cornish, 20ft. long, 6ft. 3in. diameter. Tube 2ft. 3in. diameter, 3/8 inch plates, 55 lbs. pressure. The shell was blown completely off, leaving the tubes and ends intact. The bottom was extensively corroded, so that the strength of the boiler was so reduced as not to be able to bear the usual pressure. _No. 24. Wrexham. (Fig. 14.) July 9th. 2 injured._ [Illustration: _Fig. 14._] Two Furnace Upright, 22ft. high, 8ft. 10in. diameter, 3/8 inch plates, 14 lbs. pressure. Small piece was blown out of the bottom, and the issuing contents disturbed the brickwork surrounding the boiler. The plate was corroded to a knife edge in the line of fracture, from the leaking of the adjacent blow-pipe joint. _No. 25. Dundee. July 13th. 1 killed, 1 injured._ Two tube Cornish, 28ft. 6in. long, 7ft. diameter, 3/8 inch plates. Tube 2ft. 2in. diameter, 7/16 inch plates, 40 lbs. pressure. Both furnaces collapsed, and ruptured from overheating through shortness of water. _No. 26. Halifax. July 14th. 3 injured._ Locomotive, 10ft. 9in. long, 4ft. diameter, 1/2 inch plates, 130 lbs. pressure. Nearly all the barrel was blown away. The inside was very much corroded, and there was a deep furrow at the line of first rupture, caused by the alteration in form of the boiler in the strain of working. This is usually obviated by substituting butt for lap joints, so that the pressure does not tend to alter the circular shape of barrel. _No. 27. Limerick. July 21st. 2 killed, 1 injured._ Locomotive. Few particulars are obtained. The connecting rod broke, and the loose end attached to the crank pierced the boiler, and allowed the contents to issue and scald those near. _No. 28. Hanley. (Fig. 15.) July 31st. 1 killed._ [Illustration: _Fig. 15._]