SAPEOLEGNIA FERAX. 251 



but more complicated and expensive at the outset; 

 yet it should be given every assistance by the upper 

 proprietors, for by it the fish, which under existing 

 circumstances are in great measure wasted, would 

 be converted into gain to them. 



The cost of carrying out such a scheme would 

 necessarily vary upon different rivers, for, in some, 

 miles upon miles of little inhabited water could be 

 opened up at the expense of a ten-pound note ; while 

 upon others, cauls with fish-passes would have to be 

 constructed and even artificial lakes made ; but sooner 

 or later such work will have to be undertaken, simply 

 to compensate for excessive drainage. 



It is sometimes objected that spring fish are not so 

 keen to surmount obstacles as the autumn fish, and 

 seem satisfied to remain in the lower waters ; but this 

 is all the more reason why every means should be 

 adopted to induce them to ascend by the assistance of 

 easy passes. 



Trout affected by the disease are frequently observed, 

 and should this increase, the result will be even more 

 disastrous than in the case of salmon, for trout make 

 no voyage to salt water, the only natural cure. 



The presence of disease in a river also attracts the 

 loafer for obvious reasons, who perambulates any right- 

 of-way along the banks which under ordinary circum- 

 stances has no charm for him. If he were to confine 

 his attentions to the diseased fish, not much objection 

 would be taken to him ; but unfortunately he is often 



