American Fisheries Society. 83 



tured. Common sugar barrels will do for tanks. Seines can be 

 used to advantage if the spawning grounds are smooth enough; 

 but the majority of them are not. It has been my experience 

 that the dipping process is less expensive than seming even on 

 smooth grounds. The fish run best the first part of the night, 

 and night fishing is conducted from dark until midnight. The 

 spawning season of brook trout in lakes varies the same as it 

 does with those spawning in streams, and is apparently affected 

 by the height of the water. The first fish captured in the lake 

 last season were taken October 29, 1896. The last ones were 

 taken December 2, after which time the lake was frozen over. 

 The t-rout could be seen at work on the beds long after the ice 

 closed over the lake, and, in fact, until after January i, 1897. 



The total number of trout taken with dip-nets was 1,457; 

 average weight of each fish a little over a pound. The number 

 of males exceeded the number of females in the proportion of 

 two to one. This has been the experience in the work of three 

 seasons. The first stripping occurred November 6 and the last 

 December 11. Total number of females stripped, 362; total take 

 of eggs, about 500,000. The eggs were eyed in a shanty fed by 

 springs near the lake, three troughs of trays in stacks being used 

 for the purpose. As a matter of information, twenty-nine female 

 trout, stripped of spawn at this field station Noveml^er 26, 1896, 

 were measured and weighed and the number of eggs yielded by 

 each recorded. The girth, as given in the following table, was 

 taken before the trout were stripped and with a scale which 

 might not be regarded as entirely accurate, but approximately so. 

 Some of these trout had apparently dropped part of their eggs 

 before being captured. 



