546 KANSAS CITY REVIEW OF SCIENCE. 



cornice. In the use of these boilers there is no danger from disastrous explo- 

 sions, as is the case in the use of ordinary tubular boilers. At the base on either 

 side and a little below the grate-level are two large plate-iron mud-drums, the 

 upper sides of which are framed with a horizontal plate, into which the water- 

 tubes are expanded; the tubes are sixteen feet long and three and a half inches 

 in diameter, and are placed in an inclined position, the ends being expanded 

 into the lower horizontal plates of the upper water drums. There are two of these 

 drums in each boiler corresponding with the lower mud-drums, the tubes in these 

 drums incline towards each other as they extend upward to the water-drums 

 above; above these drums the steam-drum is located, connected with the upper 

 drums referred to by means of two wrought-iron legs six inches in diameter. 

 The water circulates through the tubes, the heated gases passing around and 

 about them. In the case of low water there is no danger of explosion save from 

 the three and a half inch water-tubes, which would result in no serious damage 

 should any explode. 



Immediately back of these boilers is located the smoke-stack, and south of 

 this again is another battery of boilers. The smoke-stack pedestal is eighteen 

 feet square, and the total height of the stack 150 feet above the boiler-room floor, 

 the flue is five feet in diameter, having an iron ladder fixed at one side of the flue 

 from the base to the top of stack. Directly west of the stack and against the 

 wall, is arranged a large heater with pumps and other necessary parts. The 

 heater containing water has a height of twenty feet and is fifty inches in diameter, 

 having inverted {[\) U-shaped brass tubes. On either side the heater are Worth- 

 ington Duplex Pumps, each having a capacity of 8,000 gallons per hour. The 

 exhaust steam-pipe from the engines conducts the steam to the heater, which 

 then passes through the inverted U-shaped brass tubes in the water in the heater,, 

 thence by the exhaust-pipe out of the building. 



It will be seen that in' this, as in all heaters, the steam after having performed 

 all the work required of it in the engines in turning the machinery, is conducted 

 through the heater, thus heating the feed-water to a temperature of about 280° ;; 

 when it is forced by the pumps into the boilers. It is generally claimed that fifteen 

 per cent of fuel is saved by using a good heater over the practice of forcing cold 

 water into the boilers. The total boiler capacity equals six hundred horse power. 



The engine-room, which is twenty feet above the floor of the boiler room,, 

 has the appearance of some large pumping-station. There seems at first glance 

 to be a confusion of large drums and gear wheels which, upon closer examination, 

 assume right positions and perform each their respective work. To those expert 

 in mechanical construction it presents a very complete and well arranged picture 

 of accurate designing, nicely proportioned parts, and upon the whole a model 

 plant for the purposes for which it was designed. There are two large automatic 

 cut-off engines quite near the door through which you pass in entering from the 

 boiler-room. The cylinders are 24x48 inches. The engines throughout are 

 highly finished and were built by William Wright, of Newburgh, New York. In 

 place of the ordinary crank, large and highly-polished circular discs are arranged,. 



