THIRTIETH BIENNIAL REPORT 67 



these were caught with hook and line, May 1. I do not think it will 

 ever be a spawning stream, as there is no feed, and not many fish. I 

 procured 50,000 eggs and held them nine days at the lake before 

 coming here and the loss was 100 eggs out of 50,000. ' ' 



This lake was supposed to have a large number of rainbow trout in it. 

 Our survey made in the summer of 1927 did not indicate that there 

 were enough fish in the lake to justify the expense of installing an egg- 

 collecting station. During April we arranged to have Mr. Hamor make 

 a second survey at the time the fish were running. 



While these lakes may furnish a considerable number of eggs, they 

 will naturally be subject to seasonal conditions, and will not always 

 furnish the required number of eggs for the hatcheries. The only safe 

 and sure way of getting eggs for our hatcheries is to construct pond 

 systems the same as at Mt. Shasta Hatchery, where an adequate supply 

 of eggs can be collected to furnish all the hatcheries. Plans should be 

 made at an early date to procure sites for these pond systems. They 

 should be located in the proper locations, and the altitude, temperature, 

 water supply and proximity to railroads must be considered. 



BIOLOGICAL WORK 



The work of George A. Coleman has been of great service to the 

 Department of Fish Culture. Mr. Coleman made trips of inspection 

 of holding ponds, investigated lakes and streams, and assisted in the 

 pathological work at the hatcheries. He has made scientific surveys of 

 lakes and streams that will have to be finished up later. The biological 

 problems are too many for one man. Coleman should have one or two 

 able, trained assistants, to carry on the surveys that are necessary 

 if the best results are to be obtained. The biological work handled by 

 Coleman during the last two years will be of lasting benefit, as he has 

 laid the foundation for a series of investigations, as well as finishing up 

 some important work for the bureau that we have not space to give in 

 detail. If desired, we will furnish a supplemental report on the bio- 

 logical work for the quarterly, or in a separate bulletin. 



N.B. — The statistical report for the seasons 1926-27 of the fish dis- 

 tributed from the different hatcheries will be found in the appendix. 



