THE KENNEDY PIPE SCRAPER — DOANE. 449 



pulled out at the hatch box, if it should stop. This precaution 

 was unnecessaiy, however, as it went through without any 

 difficulty. It was again inserted and started for the run of one 

 mile and a (]uarter to the junction with the !" 5-inch pipe. It had 

 only gone about one hundred yards when it stopped, but in a 

 few minutes made another short run and stuck fast. No 1 

 Steam Fire Engine was sent out from the city and succeeded, 

 with the aid of water ram.s from the gate house, in forcing the 

 scraper to the foot of the grade, 2,200 feet from the dam, and 

 about one hundred yards up the hill to the edge of the bog, but 

 at this point it stopped again and could not be dislodged. It was 

 about daylight on Friday, the 4th, when the scraper stopped 

 altogether, and the men were at once put at work to uncover the 

 pipe at the joints, in order to discover, if possible, the exact loca- 

 tion of the machine. Its pi'ogress had been so slow that it could 

 not be followed by the usual rumbling noise. The joints were 

 opened along a (|uai'ter of a mile of pipe and the pressure tested, 

 but it was not until moi-ning that the proposed location was 

 discovered. The pipe was immediately cut and the scraper with- 

 drawn, but it was on Saturday midnight before the pipe vras 

 again connected. It was then decided to clean the 15-inch pipe. 

 It was with some anxiety that the scraper was started at 3 30 

 am., but it travelled more rapidly than ever before, making the 

 run of 29,500 feet to St. Andrew's Cross in about one hour and 

 three-quarters ; and before the hou-se-holders on the high service 

 required it Sunday morning, water was again running freely 

 from the taps. 



The surface of Spruce Hill Lake was 11 feet above the iii.take. 

 The pipe falls for 2,200 feet from the dam, where a blow-off is 

 placed, the head being about 27 feet. From this point it rises 

 for 2,700 feet to Scotch Hill, where an air valve is located. The 

 pipe at this summit is on the same level as the intake, so that 

 the pressure on the scraper would be that due to the head at the 

 gate house minus allowance for friction, etc, which would be 

 increased by the foul condition of the pipe. The incrustation was 

 very heavy and the pressure was barely sufficient to propel the 

 scraper. After passing the blow-ofl" the scraper moved so slowly 



