Soon the room was filled with the comfortable odor of Pekoe, of muffins toasted upon an electric heater, of cigarettes and stogies.

The reflector and conical heater are sustained by a flat hub and eight radial spokes bent upward toward the ends at an angle of 45°.

Referring to the illustrations previously published, it will be seen that the cylindrical heater of the sun motor, constructed solely for the purpose of generating steam or expanding air, is not well adapted for an exact determination of the amount of surface exposed to the action of the reflected solar rays.

The houses were mostly mere board shanties, tightened by pasting newspapers over the cracks inside, where the women of the family had time for such work; and the heating apparatus was generally a wood-burning cook-stove, with possibly an additional coal heater in the front room which could be fired on Sundays, or when the family was at home to tend it.

Before the chill, which followed so inevitably and swiftly, was in the air the diminutive soft coal heater was installed and in service.

I have accordingly constructed an instrument of large dimensions, a polygonal reflector (see Fig. 1), composed of a series of inclined mirrors, and provided with a central heater of conical form, acted upon by the reflected radiation in such a manner that each point of its surface receives an equal amount of radiant heat in a given time.

I examined both engines, and found them of the old boiler steam-type with manholes, heaters, autoclaves, feed-pump, &c., now rare in western countries, except England.