ON RAPID STREAMS. 181 



force of tlie water, which will cause it to assume 

 abend or curve, the centre of which is the point 

 on which the forces are acting most powerfully ; 

 the direction of the forces depends principally on 

 your position ; but as at one end of the curve the 

 line is attached and resists the force of the water, 

 and at the other terminating in the worm it is free, 

 the tendency would be for the ends to approxi- 

 mate ; but as that one which is free can alone 

 move, the effect is that the worm is drawn up- 

 wards towards the surface, and often contrary to 

 the direction of the current itself; now this move- 

 ment is entirely unnatural, that is, it is a move- 

 ment which can only be given the worm by some 

 artificial agency ; to this the trout is unaccus- 

 tomed, and he will not take the worm under such 

 circumstances. Again, if after the worm has 

 entered the water, you keep up too great a ten- 

 sion, clearly you introduce an artificial force to 

 act on the worm, whose course and direction 

 consequently must be unnatural ; and as a result, 

 the trout will equally refuse it. So you must 

 steer the middle course, and whilst by gentle 

 traction you prevent your tackle producing 1 un- 

 natural effects in delaying the worm, you yet 

 must study to make the worm swim freely down 

 the stream as much like a worm free and unat- 

 tached as is possible. 



The worm may be allowed to swim down past 

 you till it is washed to the surface below, when 

 another cast may be again tried. Besides the 

 cast I have described, you can of course throw 



