64 How to obtain it. 



tion, it is often desirable to make the outlet as near the south-west 

 corner as practicable. Our prevailing wind being south-west, and 

 most of our heavy gales coming from that quarter, it will be 

 apparent that the effects of the wind will be to keep the south- 

 west corner clear of floating matter. When the outlet is in the 

 opposite corner, all the floating matter is driven right on to the 

 screen, and causes much extra trouble. In some cases the situation 

 of the outlet in a rather bad position as regards the wind is almost 

 unadvoidable, but in a great many instances it is quite a simple 

 matter to arrange it on either the southern or western side of a 

 pond. Of course some pools are sheltered on the south-west, 

 and exposed to east winds, and work best with the outlet on the 

 east side. It is therefore necessary to take the bearings and study 

 the peculiar circumstances surrounding each case, and then decide 

 on the best place in which to construct an outlet. The result may 

 perhaps be that the best position for it, as regards wind, may 

 prove to be on the same side or very near the place at which the 

 water enters. This, again, is not good, and it may be desirable to 

 convey it, by means of a raceway, round to the opposite side, and 

 turn it in there, so as to make sure that it runs completely through 

 the pond. This may often be easily done, and is an advantage, 

 inasmuch as it provides an extra length of spawning ground for 

 the fish. Or it may be done by placing the leaf screen half-way 

 along the raceway DD (see Fig. i) instead of at the point C. or D. 

 So much, then, for the position of the outlet. 



Here let me say that the east wind is sometimes as bad for 

 fish as it is for man and beast. It has been found that under 

 some circumstances fish are adversely affected by it. This is one 

 of the many points that require investigating, and every scrap of 

 information that can be gathered together will tend to teach us 

 something more about that of which we know comparatively little 

 at present. We do know that in^ laying out fish ponds for profit, 

 which are necessarily small and heavily stocked with fish, the east 

 wind is a factor which has not to be overlooked. 



Having considered the position of the outlet, we have now 

 to decide which is the best plan to make one one that can be relied 

 upon to work in all weathers, with the least possible attention or 

 care on the part of the attendant. That care must be given to an 



