248 TEE ZOOLOGIST, 



in the tail-race. Mr. Arraitstead reported that when the brush 

 was withdrawn from the tube several Trout were brought up, and 

 an inspection of the tube showed several Trout swimming at the 

 surface of the water. Subsequently it was stated that the head 

 had separated from the brush, and was at the bottom of the 

 wooden tube, and that the man in charge of the brush had moved 

 it up and down the tube with vigour before the head separated. 

 The net in the tail-race was of fine twine with f in. mesh, and 

 the centre extended into a pocket. It was fixed at the platform 

 near the edge of the stone arch, and from its situation and the 

 curve of the tail-race the pocket streamed toward the right bank. 

 The bottom or sole-rope was furnished with pieces of lead, and 

 in addition heavy iron bars caused it to cling to the bottom. 

 The brownish hue of the water (from peat) made it difficult 

 to see the fishes, and was in contrast to the pure water of 

 Stormontfield. 



On stopping the turbine after fully half an hour's work and 

 examining the net in the tail-race, only a single fish, having an 

 eye destroyed, was found in it, and in all probability this injury 

 was due to a stiff fibre of the brush penetrating it in the wooden 

 box. When the long wooden tube in the pit of the turbine was 

 drawn up, five living fishes were found in it, a.nd one crushed, 

 the latter having been struck by the heavy brass end of the head 

 of the brush after it became free. When the pit of the turbine 

 was emptied twenty-two active fishes were taken out, and one 

 dying, the latter having been struck by the landing-net. All 

 these had resisted the suction of the turbine, and might have 

 remained in it for weeks until an opportunity for escape presented 

 itself, and it was noteworthy that they were more readily caught 

 by the hand-net at first, but as soon as they understood the 

 purpose of the net it became difficult to secure them. Captain 

 Dannevig had the same experience with the adult Cod in the 

 spawning-tanks at Floedevig, in Norway. The great fall of the 

 water into the turbine-pit was a feature in this mill. Further, 

 it was clear that a naked chimney-sweeper's brush is a dangerous 

 piece of apparatus to use amongst young Salmonoids. 



(V.) At 2.58 (Irish time) one hundred and seventy-five Trout 

 of the kinds and sizes before-mentioned were placed in the same 

 turbine-pit when three-fourths full. The pit was completely filled 



