FOR PLEASURE AND PROFIT. 29 



number. Moreover, if we take Fig. 2 as a plan of such a pro- 

 tected length of stream, only substituting the plain river bed 

 for the series of redds, the vast possibilities are at once evi- 

 dent. The surplus water can be made to supply redds formed 

 off the river, as in Fig. 3, and, further, to provide the volume 

 of water necessary for a set of rearing ponds. Thus, right 

 under your hand you would have a complete fishery, from 

 which each season might be obtained eggs, fry, yearlings 

 and twoi-year-olds ready for the rod or market. Under such 

 circumstances you ane really stocking your water, not " stock- 

 ing-at it." Beyond doubt, if we are to replenish our depleted 

 waters throughout the kingdom we must breed suitable fish 

 under suitable conditions, not only at commercial fish-farms, 

 but alsoi in every other available position. 



The most suitable ponds for 1 farming fish are those that are 

 made with that object, and one of the most simple forms of 

 artificial ponds is shown in my next photograph, which 

 is a view of the ponds at Eastgate, attached to Col. F. H. 

 Custance's Weston Fishery, near Norwich. In this case 

 a brook flows through some undulating meadow land, and, 

 by a simple process, shown in Fig. 7, one or more' trout pools 

 are formed on it that may be used fo<r spoonting purposes only, 

 or emptied at will, and the fish sold or used for stocking other 

 , waters. The drawing shows only one pond; but, of course, 

 : others can, be formed on the same brook, after a similar! man- 

 ner, if only the fall or distance, or both, between them permits 

 of the surface of water in the lower pond being below the 

 level of the bottom of the pond next above it. If the fall does 

 not permit of this, or if distance is not available and room has 

 to be economised, and yet motne than one pond is required, 

 then a more complicated problem arises, and it is dealt with 

 in Fig. 8. 



Now, there are two very important conditions that go to 

 make a really serviceable trout pond. These are, first, the 

 convenient disposal of surplus> or flood, water; and, second, 

 means of controlling the height of water in the pond and 

 emptying it at will. In a series of ponds it becomes necessary 



