THE IRRIGATION AGE. 



103 



full time, as provision is made to pay it off at any 

 time. 



Dr. Mead is very anxious that young men be 

 placed on the excess land and to assure this, he has 

 asked every farm adviser in the state to secure a 

 list of young men who would want to make appli- 

 cation for land here under the proposed plan. 



Orland to secure the attention of Congress as 

 the project on wfiich to ^ocate this land settlement 

 project must show two things, namely; that the 

 people have tried to make a go of it under present 

 conditions and not only have had a hard time meet- 

 ing obligations but the burden is too heavy anu 

 they are now in a type of agricultural slavery: and 

 that the proposed 9,000 excess acreage on which the 



HOW TO USE WATER, GAS TAR AND 

 COAL TAR ON CONCRETE 



The work on the Arrowrock dam in the Boise, 

 Idaho, project has demonstrated to a nicety the use 

 of water, gas tar and coal tar on concrete when 

 subjected to high velocities of water. The report 

 of the construction engineer, Charles H. Paul, 

 issued in January, states that the idea at Arrow- 

 rock was not so much that of waterproofing as to 

 fill all the minute voids in the surface of the outlets, 

 so as to prevent, if possible, the erosion caused by 

 the formation of vacuum in small voids or pockets. 

 Preliminary experiments had indicated that the 

 \vater-gas tar would penetrate the concrete, and 



THE ROOSEVELT DAM SALT RIVER PROJECT, ARIZOX V 



The Roosevelt Dam stores water for lands in the Salt River Valley. These lands, under a perfect irrigation system, afford one of the best 

 farming opportunities in tlie United States. 



plan in full detail would be carried out. can be put 

 into the settlers' hands without a string of com- 

 mission and other charges. 



WANTS LIST OF IRRIGATION PROJECTS 



A resolution by Senator Works of California 

 has been adopted by the Senate asking the Secretary 

 of the Interior to report to the Senate all facts con- 

 cerning irrigation projects completed, under way 

 or contemplated, and the amount of acres reclaimed 

 by each or susceptible of reclamation. 



that the coal tar would follow it in and bind to the 

 concrete much better than if it were applied direct, 

 thereby completely filling the voids at and near the 

 surface and coating the concrete with a slick and 

 fairly durable finish, cheap and easily applied. 



This coating was applied to all outlets during 

 the fall of 1914. Five of the lower outlets, and six 

 of the upper outlets were in service during the 

 irrigation season of 1915, some of them working for 

 four and one-half months under heads varying up 



