ADDENDA. 89 



ready to hand, even if only for temporary use. 

 Always have spare screens ready fitted ; they can be 

 dropped in after nightfall if needful. 



Listen carefully to the sounds of the various running 

 waters, especially at the outlets ; anything wrong may 

 thus often be detected by the ear alone, and the site 

 of the evil allocated with some degree of exactness, 

 more especially as things generally go wrong after 

 dark. 



Use plain taps in all fittings ; spring taps where 

 there is a very high and constant pressure, direct from 

 a Company's main ; the old slotted taps are far 

 preferable for all ordinary work, especially in unfiltered 

 water. 



Never alter a tap after two or three p m., so that the 

 regular run of water may be seen by daylight. In such 

 little matters the eye is very easily deceived by 

 shadows cast by artificial lights. 



If anything does go wrong, keep as cool a head as 

 possible, act promptly, and try to seek out the cause 

 of mishap, and so arrange that the trouble may never 

 recur, if possible. 



All means of turning water on to or from a fishery 

 should be under lock and key, and that key should be 

 under another lock, only accessible to the owner and 

 the manager. 



Finally, keep on as good terms as possible with 

 those around ; bitterness of feeling may prompt many 

 an act of wanton or secret mischief; whereas a friendly 

 feeling may ward off, or forewarn of coming troubles, 

 and give useful information, leading to both pleasure 

 and profit. 



