Not all haulage was by horses, and an experiment was carried out on the Middlewich Branch of the Shropshire Union Canal in 1888. Following suggestions by Francis W. Webb, the Mechanical Engineer for the London and North Western Railway at Crewe Works, rails were laid along a 1-mile (1.6 km) stretch of the towpath near Worleston, and a small steam locomotive borrowed from Crewe Works was used to tow boats. The locomotive ran on 18 in (457 mm) gauge tracks, and was similar to Pet, which is preserved in the National Railway Museum at York.