176 MONTHLY WEATHER REVIEW MAY1936 DUSTSTORMS OF IN THE UNITED STATES

By R. J. MARTIN

[Weather Bureau, Washlngton, D. C., May 10361 Duststorms were less frequent during May than in the Dense dust was reported in , South Dakota, preceding month, and dense dust occurred over a smaller , ICaasas, Okhhoma, Texas, New Mexico, Ari- area. Comparison of the acconipanying chart with that zona, Utnh, and . In several of the States nn.med, only limited areas were affected; this is especially true of Oklahoma, Texas, and Brizona. Light dust was more widespread in the Northwest than during April; Walla Walla, Wash. reported dust on 8 days and Pakima on 1. Dusty conditions were noted a.s far east 8.5 Reading, Pa., though in large Ohio Valley districts no dust was reported. At Rending, dust was only suffic.ient to cause colorful sunsets, while esperienced a light mudfall on the 31st. In c.entra1 and northern sections there was some prop- ert.y loss from these storms; in portions of Minnesota seeded fields were damaged where grain was not high enough to keep the soil from being blown away, while at other stations only human discomfort resulted. At numerous ot,her stations in these areas dust was reported aloft. Colorado again had severe duststorms; they were es- pecially frequent in southeastern counties, where the ground was cultivated extensively last year. In parts of Number of days wlth duststorms, or dusty conditions, May 1936. Barn County heav dust was reported blowing from fields an hour or two a9 ter rainfalls of one-half inch or more. appearing in t,he April issue of t)his REVIEWshows that The storms of the 19th-22d at times reduced visibility to the maximum number of dense duststorms decre.ased by 25 feet, making driving and flying conditions hazardous. about 50 percent, whde the area covered was considerably The shaded area on the chart outlines those sections smaller, especially from Texas northeastward. where dense dust was reported. BIBLIOGRAPHY C. FITZHUGHTALMAN, in Charge of Library RECENT ADDITIONS Bollinger, Clyde John. The relation of solar radiation to sun-spot cycles. n. p. 1935. The following have been selected from aniong the title,s 19 p.] tables, graphs. 23 cm. (Repr.: V. XV, Proc. of the of books recently received as representing those most Oklahoma acad. of science, 1935.) likely to be useful to Weather Bureau officials in their meteorological work nnd studics. Effects of freezing temperatures on sugarcane in the everglades. Gainesville, 1936. 12 p. ill., graphs, table. America fore insurance L indemnity group. 23 cm. (Bulletin 278. May, 1935. Agricultural experi- Windstorms, their causes and effects. New Pork. 1932. ment station. Univ. of Florida. Gainesville, Fla.) [16 p.] plates, fold. map in back. 30 cxn. Braun, Giacomo. Ashbel, D. Notizie meteorologiche e climatologiche della regione Gitilia Der Scirocco (Hamsin) Palirstinas. [Jerusdem. 1935.1 p. (Trieste, Istria e Fruili orientale). Roma. [1934.]-XII. 249-268. tables, diagrs. 24j4 cm. (Folia medica orien- 81 p. 25 cm. (Consiglio nazionale delle ricerche. Comi- talia. v. 1, fasc. 3/4. 1934/35. Folia medicinae internae tat0 naz. per la geografia. 11. Richerehe sulle variazioni orientalia. Aus den1 Hygienischem Institut der Hebrlischen storiche del clima italiana. Istituto de geografia fisica della Universitat, .) R. Univ. de Padova.) Berlage. H. P. Brooks. Charles F. Further researches int,o the possibility of long-range forecast- The Blue Hill observatory. 4 p. 24%cm. (From the Report ing in Netherlands India. 31 p. pl., maps, tables, & of the President of Harvard univ., 1933-34.) diagrs. (all part fold.) 29% cm. (Batavia. Magnetisch en Butler, c. meteorologisch observatoriuiii. Verhandlingen no. 27.) Observing the sun at 19,300 feet altitude, Mount Auncon- BelehrPdek. Jan. quilcha, Chile. Wash. 1936. 4 p. diagr. 24% cm. (Smith- Temperature and living matter. Berlin. 1935. x, 277 p. sonian niiscellaneous collections. v. 95, no. 1.) Publication illus., diagrs. 22% cm. (Added t.-p.: Protoplasma-mono- 3379. At head of title: Roehling fund. graphien . . . v. 8). Carruthers, J. N. (Bermuda.) A suggested totalising anemometer for oceanographers. Daily meteorological observations taken at St. Georges, Monaco. 1935. 6 p. diagr. 27% cm. (Repr.: Hydro- Bermuda, during the polar year August, 1932-August, 1933. graphic review. v. XII, no. 1. [No. 23 of the aeries.] n. p. 1935. [32 p.] tables. 31 cm. .) Boerema. J. Chang, Pao K'un. Daily forecast of windforce on Java. Batavia. 1934. 8 p. The duration of four seaaons in China. Nanking. 1934. plates, maps (part fold.), charts (part fold.), tables (part unp. 263.6 cm. (Geographical society of China. Journal. fold.) diagrs. 29% cm. (Batavia. Magnetisch en iiieteor- v. 1, no. 1. Sept., 1934.) [Test in Chinese: English ab- plogisch observatorium. Verhandlingen no. 27.) &act, p. 2.1

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