46 REPORT OF THE FISH AND GAME COMMISSION. 
from the railroad property. Numerous other concerns were ordered to 
cease polluting the waters, and have in all cases complied with the law. 
‘Complaints having been made that oil-carrying ships were pumping 
bilges in the vicinity of the Farallon Islands, resulting in the destruc- 
tion of bird life, an investigation was made to determine where the 
offense was being committed. Inspection showed that the pumping 
was being done outside of the three-mile limit, and therefore without 
the jurisdiction of the state. We then wrote to the heads of the marine 
departments of the three oil companies which own and operate the 
steamers asking their co-operation in an attempt to save the fast van- 
ishing bird life of the Farallon Islands. Each company thereupon 
issued instructions to the captains of boats which quickly put a stop to 
this oil nuisanee. 
‘* Respectfully submitted. 
‘fA. M. FairFienp, 
‘“Tnspector of Water Pollution.’’ 
FISHWAYS AND SCREENS. 
The installation of screens in the canals and ditches and the construe- 
tion of fishways over the dams has progressed with the other work of 
the department. 
Some delay was caused in districts where the drought of 1917 and 
1918 affected the work, but considering conditions, we have been sue- 
cessful, and all of the better class of citizens have co-operated with us 
in the work of conserving the fish supply. Some of the large irriga- 
tion companies have shown a tendency to resist the law as they do 
nearly all other regulations that cause them any outlay of money other 
than to promote their interests. 
The conservation of fish by the installation of screens and fishways is 
one of vital importance to all the people, and it can be done without 
interfering with the irrigation or power projects. 
We have had some complaints regarding screens that were installed 
and did not prove satisfactory. In every instance where we have inves- 
tigated we have found that the owners did not comply with our instrue- 
tions, but put in some flimsy or ill-constructed screen that failed to do 
the work. Where the sereens are built according to the plans given 
they never fail to be a success. Wherever the deputies have given 
particular attention to the fishways and screens we have been very 
successful. 
We wish to eall attention to the valuable co-operation given us in this 
work by deputies G. O. Laws, J. S. White, Geo. W. Courtright, M. 8. 
Carpenter, T. W. Birmingham, J. 8. Sanders, 17, ti Roberts, is al 
Becker, E. W. Smalley and W. C. Malone. These deputies gave us 
valuable assistance in their respective districts. 
