This week’s cover shows the unique Barton Aqueduct, which carries the Bridgewater Canal across the Manchester Ship Canal on a swing bridge. How this remarkable arrangement works is described in the chapter on the Manchester Ship Canal beginning this week, on page 314.
A STREAMLINED GIANT. No. 6401, of the Canadian National Railways, is one of a new class of single-expansion passenger express locomotives which appeared in 1936. The engine has eight coupled wheels and leading and trailing bogies, giving her the 4-8-4 wheel arrangement. The two cylinders have a diameter of 24-in and a stroke of 30-in. The driving wheels are of 6 ft 5-in diameter. The diameter of the boiler barrel tapers from 7 ft 2-in to 6 ft 6-in. The working pressure is 275 lb per square inch. Tractive effort at 85 per cent boiler pressure is 52,450 lb. The grate area is 74 square feet; mechanical firing is provided. The tender is carried on twelve wheels: its capacity is 11,700 gallons of water and 20 tons of coal. The total weight of engine and tender, in working order, is 296 tons.
