486 EXPERIMENT STATION RECORD. 



It is stated that there is a limit beyond which it is not economically feasible 

 to pump. For small pumping plants and small areas it is well not to exceed 

 200 ft., but for larger plants lifts of 400 ft may be economically feasible. 



About irrigation of cultivated soils, Kbuger {Mitt. Okonom. Gesell. Sachsen, 

 1912-13, pp. 71-llS, figs. 26). — This is a review of the operation and experi- 

 mental results obtained from several methods of irrigation of cultivated soils, 

 in which the spray system is favored. Several types of spray irrigation systems 

 are described. 



Irrigation of the lea Valley, C. W. Sutton {Min. Fomento, Boh Cuei-po 

 Jngen. Minas Peru, 1913, No. 79, pp. 198, pis. 13).— This publication presents the 

 results of preliminary hydraulic studies in this valley, reports on the soil and 

 climate, and gives considerable cost data on the design, construction, and opera- 

 tion of the irrigation system. 



Irrigation by lateral percolation, M. Ringelmann {Jour. Agr. Prat., n. ser., 

 26 {1913), No. 30, pp. 110-112, figs. 5).— Ditch subirrigation as practiced in parts 

 of France, Spain, Egypt, Hawaii, and the United States is described. Atten- 

 tion is called to the large amounts of water used and lost in irrigating sugar 

 cane, cotton, and grain by this method, it being stated that from 40 to 50 per 

 cent is lost by seepage and evaporation. 



Irrigation and water power laws of the State of Nebraska in force July 

 17, 1913 {[Lincoln, Nebr.}: State Board Irrig., 1913, pp. 75).— These laws 

 include (1) general provisions concerning irrigation water power, (2) pro- 

 visions concerning the State Board of Irrigation, Highways, and Drainnge, (3) 

 the construction and operation of irrigation works, and (4) irrigation districts. 



Irrigation laws [of New Mexico] {Bantu Fe, N. Mex., 1913, pp. 52).— Pro- 

 visions of the constitution and laws of the State of New Mexico are given 

 relating to the incorporating and government of irrigation companies and 

 water users associations. 



Irrigation laws of Wyoming in effect September 1, 1913 {Laramie, Wyo.: 

 State Engin., 1913. pp. Si).— The text of these laws is given. 



[Subsoil drainage for preventing malaria], C. Stricbxand {Agr' Bui. Fed. 

 Malay States, 2 {1913), No. 2, pp. 36-42). — The author advocates subsoil drain- 

 age by tile purely as an antimalarial measure and considers this a safe and 

 sure method of eradicating the malaria mosquito. As an economic phase of 

 this work he suggests that only those spots be so drained which have been 

 scientifically established as breeding places of the malaria mosquito. 



Economies of highway location; formulas and methods employed in 

 locating roads {Engin. and Contract., 40 {1913), No. 18, pp. 478-483, figs. 17).— 

 An abstract of a paper read before the International Road Congress by B. 

 Masik presents a study of the economies of road location from a thoroughly 

 European view point, considering general direction, alignment grades, methods 

 of locating the center line, longitudinal and cross sections, curves, and the 

 calculation of maximum permissible speeds of motor cars on curves. 



Action of calcium chlorid on roads, F. R. Newman {.Jour. Phys. Chem., 17 

 {1913), No. 8, pp. 708-706). — From experiments made to determine the action 

 of calcium chlorid on roads the following general conclusions are drawn: 



The usefulness of calcium chlorid depends upon the presence of free calcium 

 chlorid in the soil. Very little calcium chlorid is absorbed by the soil and 

 consequently the salt can be washed out readily. The time during which it 

 remains effective in laying dust depends on the amount of rain and on the 

 readiness with which the water drains off, so that there is no basis for the 

 claim that 2 treatments with calcium chlorid will keep a road in good con- 

 dition all summer. On the other hand, it does not wash out of a road sq 

 ca|)ldl7 as appearances might indicate. 



