viii TROUT FISHING 



to ensure that the images are exactly 

 life-size. 



The selection and arrangement of the 

 lake flies has been much more difficult. 

 The few authorities to whom I submitted 

 my own distributions were sceptical as to 

 the possibility of stating exactly what lake 

 flies were appropriate to any particular 

 month. For example, Mr. Robert Ander- 

 son, Edinburgh, who has been fishing, 

 .and supplying flies to other fishermen, 

 for over forty years, thought that they could 

 be separated only into those which might 

 be called "summer flies" and those which 

 could be used all through the season. This 

 opinion commanded respect ; yet there were 

 strong reasons for believing that the very 

 inexact state of the science of lake-fish- 

 ing was no more than a reflection of the 

 strangely casual manner in which angling 

 is practised on the lakes. These reasons 

 were derived from observation and experi- 

 ence. The insects that flutter about the lakes 

 appear just as regularly, in their seasons, 

 as the insects which haunt the streams; 



