20 
A report, giving the results of investigations up to that 
date, was issued in Bulletin 33. This discussed the relation of 
the seepage to the area irrigated and to the amount of water 
applied, as well as the rapidity of the flow of the waters under 
ground, and showed that the value of this source of water 
supply amounted to several hundreds of thousands of dollars. 
This bulletin has been very widely quoted. The more 
recent measurements have been given in the annual reports 
of the Experiment Station, and in the report of the State 
Engineer. Bulletins discussing these measurements, and 
comparing them, will soon be issued by the Experiment 
Station. 
In addition to these measurements the Experiment 
Station has also made hundreds of miles of measurements 
on canals to determine the amount of loss by seepage from 
canals, the means of preventing the seepage, and the means 
of protecting lands from such damage. It is studying the 
character of the water used in irrigation, the amount 
of water used in irrigation, and other phases of the irrigation 
question. 
