METEOROLOGY WATER. 721 



is, however, some indication tliat tliis was in part counterbalanced by a decrease 

 in the earth's radiation to space, caused by the haze. 



" Similar periods of haze followed great volcanic eruptions in former years. 

 The influence of Krakatoa. Bandai-San, Mayon, Santa Maria, and Colima seems 

 to have been recorded by measurements of solar radiation, and caused pro- 

 nounced decrease in the direct solar beam from 1883 to 1885, 1888 to 1894, and 

 1902 to 1904. 



" Evidence is presented that the dust layer of 1912 affected terrestrial tem- 

 peratures, especially of high stations. 



"A remarkable correspondence is found between the average departures of 

 the mean maximum temperature for 15 stations of the United States and a 

 curve representing a combination of the sun-spot numbers of Wolfer and the 

 departures from mean values of the annual march of direct solar radiation 

 from 1883 to 1909." 



Do volcanic explosions affect our climate? C. G. Abbot (Nat. Geogr. M(ig., 

 24 (1913), No. 2, pp. 181-198, figs. 10).— From observations by means of the 

 Langley bolometer the author concludes " that volcanic haze has very ap- 

 preciably influenced the march of temperature in the United States." He be- 

 lieves that " it will be found eventually that temperatures are influenced per- 

 haps as much as several degrees by great periods of haziness, such as those 

 produced by the volcanoes of 1883, 1888, and 1912," viz, the eruptions of 

 Ki-akatoa, Island of Vulcano, and Katmai. 



Evaporation in the Great Plains and mountain districts as infl.uenced by 

 the haze of 1912, L. J. Beiggs Jind J. O. Belz (Jour. Wash. Acad. Set., S 

 (1913), No. IJf, Pi). 381-386). — Observations at 15 places on the Great Plains and 

 intermountain regions are recorded which indicated that the average evapora- 

 tion of these places " was below normal during the 4 months following the 

 eruption of Mt. Katmai, the average reduction in evaporation being about 10 

 per cent." 



Bulletin of the Mount Weather Observatory (V. S. Dept. Agr., Bui. Mount 

 Weather Observ., 5 (1913), pt. 6, pp. 365-419, figs. 36).— This number contains 

 the following articles: The Wolf -Wolfer System of Relative Sun-spot Numbers 

 for the Years 1901-1912, by A. Wolfer; Certain Characteristics of Easterly 

 Winds at Blue Hill Observatory, by A. H. Palmer ; and Free-air Data at Mount 

 Weather, Va.. for October, November, December, 1912 (illus.), by W. R. Blair. 



Monthly Weather Review (Mo. Weather Rev., 41 (1913), Nos. 5, pp. 663-814, 

 pis. 10; 6, pp. 815-966, pis. 9). — In addition to the usual climatological sum- 

 maries, lake levels, weather forecasts and warnings for May and June, 1913, 

 river and flood observations, lists of additions to the Weather Bureau library 

 and of recent papers on meteorology, a condensed climatological summary, and 

 climatological tables and charts, these numbers contain the following special 

 papers. 



No. 5. — Severe Hailstorm on James Island, S. C, by J. H. Scott : Snow Survey 

 of Big Cottonwood AVatershed, by H. K. Burton and W. A. Richmond; Snow 

 Survey on Pole Creek Watershed, Sanpete County, Utah, by B. F. Eliason ; 

 Notes on the Rivers of the Sacramento and Lower San Joaquin Watersheds, by 

 N. R. Taylor ; Notes on Streams of the Upper San Joaquin Watershed, by W. E. 

 Bonnett ; and The Sun as a Fog Producer, by A. G. McAdie. 



No. 6. — Severe Wind and Hail Storms in Florida, by A. J. Mitchell ; Probable 

 Cause of the Electric Storms in Western Kansas, by S. D. Flora ; Torrential 

 Rainfall at Montell, Tex., by B. Bunuemeyer ; Notes on the Rivers of the Sacra- 

 mento and Lower San Joaquin Watersheds during the Mouth of June, 1913, by 

 N. R. Taylor; Notes on Streams of the Upper San Joaquin Watershed, by J. H. 



