Ottawa, Arnprior & Parry Sound Ry.

The illustration on this page shows one of the locomotives recently built at the Baldwin Locomotives, Philadelphia, Pa, for this line. The following are the general dimensions:

Cylinders	Diameter,	Low pressure,	14 ins
		High pressure,	24 ins.
	Stroke,		26 ins.
	Valve,		Balanced piston.
Boiler	Diameter,		60 ins.
	Thickness of sheets,		5/8 & 11/16 ins.
	Working pressure,		180 lbs.
	Fuel,		Soft coal.
Fire Box.	Material,		steel.
	Length,		102 1/8 ins.
	Width,		42 ins.
	Depth,	Front,	69 1/2 ins.
		Back,	58 1/2 ins.
	Thickness of sheets,	Sides,	3/8 in.
		Back,	3/8 in.
		Crown,	1/2 in.
		Tube,	1/2 in.
Tubes	Number,		280.
	Diameter,		2 ins.
	Length,		14 ft. 4 1/2 ins.
Heating surface,	Fire box,		154.0 sq. ft.
	Tubes,		2,108.0 sq. ft.
	Total,		2,262.0 sq. ft.
	Grate area,		29.75 sq. ft.
Driving wheels,	Diameter,	Outside,	56 ins.
		Of centre,	50 ins.
	Journals,		8 1/2×11 ins.
Engine truck wheels,	Diameter,		30 ins.
	Journals,		6×10 ins.
Wheel base.	Driving,		13 ft. 0 ins.
	Total engine,		24 ft. 9 ins.
	Total engine & tender		51 ft. 3 1/2 ins.
Weight in working order.	On drivers,		117,000 lbs.
	On truck,		34,000 lbs.
	Total engine,		151,000 lbs.
	Total engine & tender,		239,000 lbs.
Tender	Wheels,	diameter.	33 ins.
	Journals		5×9 ins.
	Tank capacity,		4,000 gals
	Weight,	Empty,	40,500 lbs.

Service, freight, guaranteed to haul a load of 750 to 800 tons (2,000 lbs) of cars & lading on a grade of 1% combined with curves of 4 1/2 degrees, track & cars being in good condition.

Railways: O.A. & P.S.Ry.

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