69 



inches diameter. The grate surface has an area of sixteen square feet, 

 and the heating surface of the boiler is seven hundred and fifty square 

 feet. The furnaces are under the shells of the boiler ; the fire returning 

 through the tubes. The boiler fronts are entirely of iron, and are 

 very substantial and neat in appearance. The boilers are fed by a 

 small duplex pump. 



BOILER HOUSE. 



The Boiler House is situated on the surface of the ground near the 

 well, and is constructed of pressed brick with Ohio stone trimmings. 

 The chimney is located at one corner of the house. It is ten feet 

 square at the base and is to be sixty feet high, and has a flue two feet 

 square throughout. The house is completed except the roof, and the 

 chimney is carried up but about forty-five feet. 



ENGINE AND PUMP FOUNDATION". 



It was necessary to place the Pumps and Engine near the surface of 

 the water in the well, and in order that they might be entirely independ- 

 ent of the walls of the well, which were liable to settlement, it was decided 

 to place them on a platform carried by six cast-iron columns. These 

 columns were made nine inches in diameter with three-fourths inch 

 thickness of metal, and of different lengths. They were cast with 

 flanges on the outside by which the sections were securely bolted 

 together. They were sunk into the sand by a very rapid, cheap and 

 effective method. The sections forming each column were bolted 

 together. A cap was made to fit the top of the column and was 

 securely bolted to it, and in the centre of this was a coupling for a two 

 and a half inch hose. At the bottom another flange was cast with a 

 cone projecting ten inches from its under side with an opening at the 

 point two and a half inches in diameter. The column thus equipped 

 was suspended over the position it was to occupy, and suitable guides 

 provided to ensure its maintaining a vertical position in its descent. A 

 hose was thus attached to the coupling on the cap and connected with 

 a small number-four Worthington pump. The pump was started and 

 water forced in at the top of the column and out at the bottom. As 

 soon as the flow was fully established the column was lowered down. 

 The water escaping into the sand below the column loosened it, and 

 kept it in violent agitation, so that it offered almost no resistance to 

 the sinking, the water escaping alongside of the column to the 

 surface. 



These columns, nine inches in diameter, with a bottom flange eighteen 

 inches in diameter, were sunk into the sand from eight to ten feet in 



