An engine especially designed to meet the requirements of mines or loyalties whore space is a consideration is the five horse power vertical winding engine. To meet colonial wants, the boiler is constructed to burn wood.
SPECIAL ENGINES.
Another special type of vertical engine is a 10-h.p. for running at high speed (400 re volutions per minute) in situations where space is an object. It is admirably adapted for electric lighting on board ship, and can be coupled direct to the dynamo, thus savin ti the space of intermediary belting. °

A fourth type of engine is the underneath compound, and the iil'lh a patent under neath high pressure double cylinder. Tho former is most suitable for electric lighting, and works up to 14(>lb per square inch, at which pressure it works with the greatest economy. The latter works at 801b pressure, and is intended for driving machinery, kc.', in workshops and the electric light. Portable engines for colonial use arc chiefly represented by a 12-h.p. compound

portable, and 10-li.p. high pressure portable "F " class. The compound engine is notice able for several features. Steel enters largely into its construction. The boiler also is stoel, and is built to cam- :\ daily working pres sure of 1401b. The 10-h.p. portable "F" class is a powerful engine intended for colo nial use. and having a boiler with extra large (ire-box for burning wood, and wheels with tires of special width for country roads; it is well adapted for general requirements in the country. There are several other "portables" of this class and of various powers, all showing the same perfection of mechanical finish for which Messrs Hornsby are celebrated.
