Side by side on the World's Fair grounds, these Burlington passenger engines illustrated a wonderful evolution in railroad motive power. The little 35 was the Pride of the Prairies in 1882, and rolled up an incredible millage in its day. It is still in perfect running condition. The 3000 is he most powerful 4-6-4-wheeled type locomotive in the world. It heads the Burlington's crack six-car exhibition train at the Century of Progress Exposition. Comparison No. 35 No. 3000. Length 55 feet, 93 feet 2 in. Weight 142,000 lb. 718,000 lb. Boiler Diaeter 4? feet, 8 feet. Dimension of firebox 2¾ x 6 ft., 8 x 11 feet. Diameter of drivers 5? feet, 6½ feet. Length of boiler tubes 2231 feet, 4674 feet. Tractive effort 12,880 lb., 59,400 lb. Water Capacity of tank 2750 gals., 15,000 gals. Coal capacity of tender 7 tons, 24 tons.