( 73 ) 



already been discussed (pp. 7-11'); ^^ I'fis likewise the con- 

 version of siui])le irrigation weirs into traps for the taking of 

 lisli, and irrigation canals into vast slaugbtcr-lionses, besides 

 unduly obstructing fish proceeding to tbcir natural breeding- 

 places, and by the use of fixed engines and traps in small 

 water-courses, and at every drn)) from field, to field, forming 

 a scries of places for annihilation of fry. Here, therefore, 

 the subject for consideration is damming waters for fishintj 

 purposes solely. 



LXXV. Waters, as rivei's or streams, may be dammed 



Damming and diverting rivers or for fishiug purpOSCS With (1) Or 



streams, &c., for fishing. without (2) thc assistance of weirs, 



or (3) hill streams may be dammed and diverted, or simjily a 

 a dam may bo (4) employed to bund uj), water, in order to 

 facilitate the poisoning of fish. Tanks or standing pieces of 

 ■water may be likewise dammed for fishing (5) as a common 

 occurrence, or (0) else as the waters are drying up ; (7) Holes 

 may be dvig at the sides of rivers with which a connecting 

 channel is cut, thc fish enticed in communication cut off, and 

 the water baled out ; or (8) small bunds be erected parallel to 

 the rivers' course, fry driven or enticed in, and all destroyed. 

 Hill streams may be dammed and diverted for fishing pur- 

 poses — a plan which obtains in thc Himalayas and elsewhere. 

 Thc effects of damming up and diverting the minor streams 

 into kools or channels for turning mills, and which is used 

 as a fertile instrument of destroying small fish (jjp. iv, xviii) 

 has been already referred to. In the Panjcib, at Kangra 

 (p. xvi), the zemindars do a great deal of mischief in the 

 early part of the rains, by bringing the fish into side streams, 

 and then draining off" the water and leaving them on dry 

 ground: young and old are caught in this way. In Bombay, 

 at Satara (p. lix), fish are taken by diverting the natural 

 course of a stream so as to make all the water pass through 

 a large basket trap, or by throAving a bank of sand across a 

 river or nalla and obtaining the fish in the usual way, viz., 

 by baling. In Haidarabad, it is observed (p. cxiii) that fish 

 are taken by tra])s, which is done by erecting rough stone 

 piles on both sides of a stream, then spreading a mat of the 

 nurgood plant over the piles ; the stream is then diverted 

 so as to pour over thc mat, on which, as the water falls, the 

 fish are taken. Hill streams may be also diverted, and thc 

 modes employed arc as follows : — In the Doon (p. cxlix) 

 " from March to thc beginning of the rains, streams are 

 dammed and turned. In this district the mountain torrents. 



