62 FISH HATCHING. 



shovelling in large objects, such as salmon roe, 

 but for picking such small things as insects, I 

 should say that they are an instrument in the 

 hands of an all-wise Providence, for removing 

 insects feeding upon the ova, and at all 

 events such an insignificant means could not 

 have been chosen for the purpose of neutral- 

 ising the too great increase of salmon. I 

 think it wisest for man not to interfere in the 

 management, and to spare my lively little 

 friend the water-ouzel. GOTHENBURGER, 

 February 14." 



At a scientific meeting of the Zoological 

 Society, in February, 1863, among other 

 points that I brought foward for discussion 

 was the various causes of the destruction of 

 the ova in their natural state. I quoted the 

 results, as regards the water-ouzel, already 



