USE OF FLUSH-TANKS 



237 



In Cayuga Street there were a few connections and little 

 flow, so that the condition of the pipe was very foul; there was 

 also a heavy vegetable growth in the pipes. 



On Linn Street no comparative records could be made. The 

 pipe was clean from the flush- tank to manhole No. i, and in 

 this length there were no connections. From No. i to No. 2 it 

 was slightly foul, and very foul the remainder of the length. 

 There were two house-connections on the line. Five flushes of 

 20 to 60 cubic feet were made. Each was very effective, one 

 apparently as much so as another. All obstructions introduced 

 were removed at once from manholes Nos. i and 2. A steady 

 flow i inch deep from the hose carried everything forward at 

 once to a point beyond No. 2 and to the flatter grade. 



TABLE XXIX 



AURORA STREET SEWER 



TABLE XXX 



FIRST STREET SEWER 



On the Aurora Street line the pipe was very foul, chiefly from 

 a hospital connection at the upper end. The vegetable growth 

 was excessive, and the accumulations of organic matter very 

 evident. 



