882 expeeimejStt station kecoed. 



The ground waters of Antigua, H. A. Tempany (West Indian Bui., 14 

 (1914), No. 4, pp. 2S0-303, fig. 1). — This article summarizes the existing infor- 

 mation regarding tlie chemical and other characteristics of waters from tlie 

 various sources on the island of Antigua. 



It is stated that in the limestone district there are good prospects. of obtain- 

 ing supplies of underground water at suitable points. " The localities at which 

 wells are sunk should be selected with due regard to the following points: 

 (1) They should be situated at not too great a height above sea level so as to 

 avoid having to penetrate unnecessary thickness of rock, (2) they should be 

 situated a sufficient distance within the limestone outcrop to insure that at the 

 point selected the rocks to be penetrated are of adequate thickness and afford 

 a large enough gathering ground, [and] (3) they should be situated at a suffi- 

 cient distance from the sea to obviate the risk of the supply being contaminated 

 by percolation of sea water. In addition care must be exercised in conducting 

 boring operations to avoid passing through the limestone strata and penetrating 

 the underlying rocks which contain the saliniferous deposits. 



" In the southern district of the island there is good prospect of obtaining 

 moderate supplies of water from wells sunk in the alluvial fillings of the valley 

 bottoms, but in choosing sites for such wells it is advisable to avoid approach- 

 ing too near to the bases of the surrounding hills. In the central plain it is 

 inadvisable to look for a supply of water either by wells or by means of dams 

 erected for the purpose of impounding surface flood water in the region covered 

 by the saline deposits. To the south of this region, however, there appear to 

 be prospects of obtaining satisfactory supplies of water by the sinking of wells, 

 or preferably by the erection of dams." 



Measurement of the fiow of streams by approved forms of weirs with new 

 formulas and diagrams, R. R. Lyman {Trans. Amer. Soc. Civ. Engin., 77 

 U9U), No. 1304, PP- 1189-1281, pis. 11, figs. 53).— This paper gives the details 

 and summaries of the results of experiments by Francis, Bazin, Fteley, and 

 Stearns, and of experiments at the hydraulic laboratories of Cornell University 

 and the University of Utah. The purpose of the report is " to present a 

 more accurate method of measuring water than those generally used and to 

 give formulas and diagrams for determining the discharge over the weirs 

 recommended." 



It is the author's opinion " that the sharp-crested weir without end con- 

 tractions can certainly be used to best advantage in all irrigation projects, 

 great and small, of the West." 



Formulas of the form Q = m Ji^ were prepared for four different classes of 

 weirs without end contractions as follows: Sharp-crested weirs, broad-crested 

 weirs, irregular weirs with cross sections of right lines, and irregular weirs 

 with cross sections of right lines and curves. In this formula Q designates the 

 quantity discharged over a weir in cubic feet per second per foot of length of 

 weir, and h designates the observed head of water on a weir in feet. The values 

 of the constants m and n as obtained by experiment are given in tabular form. 



A large amount of other related data are also giv-en. 



Stream-gaging stations and publications relating to water resources, 

 1885-1913, Parts XI-XII, compiled by B. D. Wood (U. S. Geol. Survey, Water- 

 Supphj Paper S40 (1915), K, pp. XXIV +131-146 ; L, pp. XVIII +147-195).— 

 These are the last two numbers of this series (E. S. R., 33, p. 89). Part XI 

 deals with Pacific coast basins in California and Part XII with the north 

 Pacific slope drainage basins. 



Experiments with the divining rod, H. Metzgeb (Osndhts. Ingen., 38 

 (1915), No. 2, pp. 13-15). — A test of the use of the divining rod for determining 

 the location and depth of underground water supplies is described. Seven 



