184 EXPERIMENT STATION EECORD. [Vol.36 



the dam, until it now covers some 900 acres to an average depth of from 8 to 

 10 ft. . . . 



" The results of the disposal from the standpoint of avoidance of nuisance 

 are extremely successful. . . . The broad, shallow lake, with partial dilution 

 and abundant opportunity for sedimentation and oxidation, effects a high degree 

 of purification, and there is no odor from it except a slight marshy smell." 



Disposal of sewage from country houses, small institutions, and country- 

 clubs, P. Hansen (IU. Hcalih Ncirs, n. scr.. 2 {1916), No. 8, pp. 151-167, //;/.t. 

 11). — This article deals with .sanitary prities; chemical closets; sewage tanks, 

 including Imhoff taulvs; and purification systems, inclmliug tile absorption 

 areas, intermittent sand filters, contact filters, and .sprinkling filters. 



Double tank proposed for residential sewage plants, V.\ S. Coulteu (Engiii. 

 Rec, 74 (1916), No. 10, pp. 29S, 299, fiffS. 2).— The author maintains that the 

 logical arrangement for residential sewage-disposal plants is a septic tank and a 

 short-period Imhoff tank placed in series, " The two-story tank then serves to 

 intercept matter carried over from the septic tank and, if given reasonable 

 attention, should insure a well-clarified eflluent. The Imhoff tank should be 

 provided with light, strong checkered plate covers to allow unob:-?tructed access 

 to the slopes and gas vent. . . . Tlie upward-ilow type possesses advantages 

 peculiarly fitting it for tlie primary tank in such a series, the influent being 

 admitted at a point near the bottom and caused to pass upward through the 

 sludge accumulation." 



The greenhouse type of sludge drying bed and a ventilating duct for aerating 

 the tile fields are advocated. 



Conveyance of water in open channels on the farm (Jour. Electricitu. 37 

 (1916), No. Ui, pp. 261-263. fi;js. -}>. — Curves are given showing the carryiu,-: 

 capacity of small earth ditches varying in area of water cross-section from 0.5 

 to 8 sq. ft. and in fall from 0.2.3 to 10 ft. per l,0(H)-fr. length, the capacity being 

 expressed in miner's inches, sncond-feet. and gallons per minute. 



Surface water supply of North Atlantic slope drainage basins, 1914, (U. *S'. 

 Geol. Survey, Water-Supply Paper 3S1 (1916), pp. Wo+XXXVII, pis. 2).— This 

 report, prepared in cooperation with the States of Maine, Vermont, Massa- 

 chusetts, and New York, presents the results of measurements of flow made on 

 the St. John, St. Croix, Machias, Union, Penobscot, St. George, Kennebec, 

 Androscoggin, Presumpscot, Saco, INIerrlmack, Connecticut, Housatonic, Hudson, 

 Delaware, Susquehanna, Patuxent, Potomac, and Rappahannock river basins 

 during 1914. Lists of the stream-gaging stations and the publications of the 

 Geological Survey relating to water resources for this region are appended. 



Supplement to the annual report of the state engineer and surveyor of the 

 State of New York, 1914 (Ann. Rpt. State Enyhi. and Surceyor N. Y., Sup., 

 1914, pp. 367). — This report presents the results of measurements of flow made 

 on streams in New York during 1914. 



Oregon's opportunity in national preparedness, .1. 11. liEWis, L. F. Hakza, 

 G. Stuublefield, and E. J. McCal'stlanu (Off. State Engin. Oreg. Bui. 5 (1916), 

 pp. 120, figs. 28). — Tliis bulletin presents tentative plans and estimates of cost 

 for the construction of a number of large water-power projects in Oregon, dis- 

 cusses possibilities for marketing some of this power, and points out direct and 

 indirect benefits of such work, with special reference to the manufacture of 

 nitrates, munitions of war, and fertilizers. 



Rainfall and agricultural power use, S. B. Shaw (Jour. Electricity, 37 

 (1916), No. 13, pp. 242, 243, figs. 4). — The results of studies made in the Santa 

 Clara Valley, Cal., on the effect of the amount of rainfall and of its distribu- 

 tion throughout the season upon the consumption of electric energy by irriga- 

 tion plants are graphically reported. 



