METEOROLOGY — WAtEfi. 313 



Dew measurements during' 1904 to 1907, N. Passerini (Co/. 1st. Agri 

 t<ciiiiili((i, 2. .s( /•., 7 {I'JOS). No. 2. i)n. l!H-20-'f). — Already noted fmui another 

 source (K. S. K., 20, p. 015). 



Surface water supply of the Ohio River basin, 1907-8, A. H. Horton, 

 M. 11. Hall, and R. H. I'.olster ( U. S. (Icol. ^Survey. ir«/(/--*S»/^/>/// I'diicr No. 

 2'i3, pp. 7-224, P^-^- -h P9- !)■ — I'his publication gives the results of flow measure- 

 ments in the drainage basins of tlie following rivers : Alleglieny, Monongaliela, 

 ^Muskingum, Kanawha. Miami, Wabash, and Tennessee. 



Surface water supply of the St. Lawrence River basin, 1907-8, H. K. 

 Barrows, A. II. Horton, and R. H. Bolster (U. S. Geol. Survey, Water-Supply 

 Paper No. 2.'f'i, pp. 7-163, pis. 7, fig. 1). — This publication gives the results of flow 

 measurements iu the following drainage basins: Lakes Michigan, Huron, Erie, 

 and Ontario, and the St. Lawrence River. 



Surface water supply of the Upper Mississippi River and Hudson Bay 

 basins, 1907-8, A. H. Horton, E. F. Chandler, and R. H. Bolster (t/. S. 

 Geo/. Survey, Water-Supply Paper No. 245, pp. 7-133, pis. 5, fig. i).— The re- 

 sults are given of flow measurements iu the drainage basins of the following 

 rivers: St. Mary, Red, Mississippi (at Anoka, Minn.), Chippewa, Black, Wis- 

 consin. Wapsipinicon, Rock, Iowa, Sangamon. Kaskaskia. and Big Muddy. 



Surface water supply of western Gulf of Mexico, 1907-8, W. B. Freeman, 

 W. A. Lamb, and R. H. Bolster (U. S. Geol. Survey, Water-Supply Paper No. 

 24s, pp. 5-171, pis. 4, fig. 7).— The results are given of flow measurements in the 

 Rio Grande River drainage basin. 



Surface water supply of the Colorado River basin, 1907-8, W. B. Free- 

 man and R. H. Bolster {U. S. Geol. Survey, Water-Supply Paper No. 249, pp. 

 206, pis. iO).— This publication gives the results of flow measurements in the 

 Colorado River drainage l)asin. 



Water supply statistics (Ann. Rpt. Bd. Health Mass., 40 (1908), pp. 215- 

 250). — Data for rainfall and flow of streams in various places iu Massachusetts 

 are given. 



Examination of public water supplies {Ann. Rpt. Bd. Health Mass., 40 

 (1908), pp. 203-211). — Chemical analyses of the princii)al sources of public 

 water supply in Massachusetts examined during 1908 are reported. 



Examination of rivers {Ann. Rpt. Bd. Health Mass., 40 {1908), pp. 545- 

 555). — This is an account of the examination of sources and character of pollu- 

 tion of various streams in Massachusetts. 



Purification of sewage, H. W. Clark and S. DeM. Gage {Ann. Rpt. Bd. 

 Health Mass., 40 {1908), pp. 253-538, dgins. 20; reprint, pp. 201, dgms. 20).— This 

 is a review of 21 years' experiments on the purification of sewage at the Law- 

 rence (Mass.) Experiment Station. It summarizes the results of experiments 

 on the composition of the sewage used ; sand and soil filtration ; efficiency of 

 trickling filters; contact filters aud their operation; comparative disposal of 

 organic matter by sand, contact, and trickling filters; i)reliminary treatments 

 for removal of siispended matter; disposal of sewage sludge by destructive dis- 

 tillation; bacteriology of sewage and sewage purification; and biochemistry of 

 S'.'wage purification. 



Sterilization of large quantities of water by means of ultraviolet rays, 

 V. Hknri, a. Helhronner, and M. de Recklinghausen {Conipt. Rend. Aead. Sci. 

 [Paris], 150 {1910), No. 15, pp. 932-934, fig. 1; abs. in Sci. Abs., Sect. B— Elect. 

 Engin., 13 {1910). No. 6, pp. 209, 2/0).— This article describes an apparatus 

 capable of sterilizing water at a rate of 125 cubic meters per hour. The appara- 

 tus consists essentially of a mercury vapor lamp in quartz of the Westinghouse- 

 Oooper Hewitt type. With such a lami), using a current of 220 volts and 3 

 amperes, an emulsion containing typhoid, dysenteric, and similar bacilli was 



