588 EXPERIMENT STATION RECORD. 



tion of R. B. Marshall, describes the general features of the Bear River basin 

 jiiid gives a plan and iirofile of the river frora Kiverdale to Novene, Idaho. 



Profile surveys of Snoqualmie, Sultan, and Skykomish. rivers, Washington 

 4U. 8. Geol. Survey, Water-Supply J^aper 366 {19U), pp. 7, pis. 12).— In this 

 fiaper, prepared under the direction of R. B. Marshall, the general features of 

 the Snohomish River basin are described and plan and profile maps of the Sno- 

 •♦jualmle, Sultan, and Sliykomish rivers and certain of their tributaries are 

 j-'iven. 



Profile surveys of Missouri River from Great Falls to Three Forks, Mon- 

 tana {U. 8. Geol. Survey, Watcr-Supply Paper 367 (191.',), pp. 8, pis. 1.3^.— 

 This report, prepared under the direction of R. B. Marshall, describes the gen- 

 eral features of the Missouri River basin and gives a plan and profile of the 

 river from Great Falls to Three Forks, Montana. 



The diaphragm method of measuring the flow of water in open channels 

 of uniform cross section {Engin. and Contract., Jf2 (1914), No. 18, pp. JflJf, 

 41s, fif/s. 4). — The diaphragm method is described and two examples of appa- 

 ratus are illustrated. 



German experiments with one apparatus using calibrated orifices to check the 

 diaphragm method showed a close agreement and that the diaphragm gave accu- 

 rate measurements with velocities as low as 0.02 ft. per second. Another test, 

 using the current meter as a check, showed that the diaphragm gagings checked 

 the meter gagings very closely, the greatest difference obtained by a direct com- 

 parison being 0.7 per cent. 



The chief advantage of the diaphragm method is said to be "the rapidity with 

 which the measurement can be made. The disadvantages are that a channel of 

 sufficient length and uniform section must be available and that the cost of 

 Installing the necessary appai*atus is rather high. 



List of references on water rights and the control of waters (Washington: 

 LiT)rary of Congress, 1914, PP- 111). — It is the purpose of this list to bring 

 together the more important discussions of the various claims put forth by con- 

 flicting interests, including irrigation and ix)wer development concerns and prop- 

 erties largely dependent for their value upon the continuance of natural stream 

 flow, and to point out by means of an analytical index where information on any 

 phase of the subject may be found. 



Draining District 9, Mississippi County, Arkansas, L. L. HmiNOEB (Engin. 

 Rec., 70 (19U), No. 17, pp. 455-/f57, figs. 2).— The methods of design and 

 execution of the work for an improvement involving 14.000,000 en yds. of 

 dredged excavation to prevent river overflow and provide local drainage benefit- 

 ing 300 square miles of land are presented. 



The main features of the district plans are (1) protection from overflow from 

 the Little River, (2) a system, of lateral drainage through the entire territory, 

 and (3) a system of outlet channels to carry to a final outlet the water collected 

 in the lateral drains. A survey of the existing information regarding the run-off 



28 

 <if the district led to the development of the formula E=-7=p+7.2. in which B 



equals run-off in second-feet and 71/ equals the area in square miles. The so- 

 called fish-bone system of drainage was rejected owing to the fact that too 

 large and unwieldly a channel would be necessary and would make the effec- 

 tive distribution of sloi>e difficult. In its stead a 4-channel plan was adopted. 



The estimated cost of the excavation was $1,155,000. 



Comparative steam and electric power layouts for a drainage pumping 

 plant (Engin. and Contract., 42 (1914), No. 18, pp. 412-414, fi9^- 5). — Compara- 

 tive plans and bidding prices for the two types of jnunping plant are given with 



