EXPRESS PASSENGER ENGINE, NORTH BRITISH RAILWAY.

The Hawick and Border Union Railway, uniting Carlisle with Edinburgh and Glasgow, constitutes one of the heaviest roads in the world worked by high speed passenger traffic, as will be seen from the sections on page 4. One incline of 1 in 70 is, in round numbers, seven miles long without a break worth mentioning; another of nearly eight miles rises at the rate of 1 in 75; a third incline equally steep is two miles long. It will be understood that to work the fast Pullman car passenger traffic of the Midland Railway over such a road as this, very powerful engines indeed are required.