153 



miles ; it had crossed several public roads ; 

 had received tlie wash of a large tract of 

 country and of villages, and carried along 

 with it not only mud, but sand and coarse 

 gravel, which Mr. Kerr had very wisely 

 just been throwing out of the feeders upon 

 the surface of the land, and without which, 

 he told us, the water would do little good, 

 and yet this water is called " hog-xvafer,'* 

 and of an "ochrey appearance." And this, 

 it seems, is one reason why a decided pre- 

 ference is given to clean-water in floating. 

 This deception however tends to invali- 

 date every other proposition in his book, 

 and renders no service to the cause which 

 Mr. Smith has undertaken to advance. 



In the remarks which I have hitherto 

 made, as preparatorj' to a more clear con- 

 ception of the method of floating, which 

 I am about to describe, I have endea- 

 voured 



