19191 SOILS — FERTILIZERS, 17 



operation. Thermograph records are obtained for thermometer bulb*? placed at 

 the sauie depth (3 in. below the ground at all stations with additional readings 

 at 12 in. at certain stations), in level, well-drained soil, free from the shade of 

 trees or buildings, and under a ground surface kept free from sod or weeds, 

 but without continuous cultivation. It is hoped that the data obtained will 

 make it possible eventually to draw isotherms for the soil of the United States 

 and Canada analogous to those that have been drawn for the air over the same 

 countries." 



The climate of Utah, P. L. West and N. E. Edlefsen {Utah Sta. Bui. 166 

 {1919), pp. 3-66, figs. 48). — Weather and climate are defined and the various 

 influences and effects of climate are discussed. How weather observations are 

 recorded and forecasts are made are also explained. " The type of climate 

 peculiar to Utah and the configuration of its land surface are discussed; also 

 the areas devoted to the different kinds of agriculture and to the leading in- 

 dustries of the State. The State is divided into climatic zones and a general 

 discussion of each made. Charts showing the distribution of population, the 

 value of the farm land in different sections, and the areas that are irrigated, 

 are inserted. . . . For the principal town of each county, the following data 

 are presented by means of a chart: The precipitation for each year of the 

 record, the mean monthly amount of precipitation, the duration of the gr-owing 

 season for each year, the occurrence of summer rains, and the leading agri- 

 cultural products. . . . The means and extremes are [also] given with a very 

 brief discussion. A table containing data on precipitation, temperature, and 

 frost for the entire State by towns is inserted." 



[Weather reports for 1917], C. C. Georgeson et al. {Alaska Stas. Rpt. 1917, 

 pp. 5, 34, 35, 59-61, 12, IS, 90-06).— Tabular summaries are given of observa- 

 tions on temperature, precipitation, and cloudiness at 25 Weatlier Bureau sta- 

 tions in Alaska, and the character of the season, with special reference to crop 

 growth and agricultural operations, at the Sitka, Rampart, Fairbanks, and 

 Kodiak Stations is discussed. 



Meteorological observations, J. S. Stevens {Maine Sta. Bui. 275 {1918), pp. 

 235, 236). — A monthly and annual summary of observations at the University 

 of Maine on temperature, precipitation, cloudiness, and wind movement during 

 1918 is given. The mean temperature for the year was 42.99° F., as compared 

 with an average of 42.75° for 50 years; the total precipitation was 37.97 in., 

 the snowfall 95.75 in., the number of clear days 210, the number of cloudy days 

 73, and the total movement of wind 45,013 miles. 



Meteorological observations at the Massachusetts Agricultural Experi- 

 ment Station, J. E. Ostrander and A. L. Chandler {Massachusetts Sta. Met. 

 Buls. 363-364 {1919), pp. 4 each). — Summaries of observations at Amherst, 

 Mass., on pressure, temperature, humidity, precipitation, wind, sunshine, cloudi- 

 ness, and casual phenomena during March and April, 1919, are presented. The 

 data are bi'iefly discussed in general notes on the weather of each month, 



SOILS— FERTILIZERS. 



Soil survey of Montgomery County, Iowa, A. M. O'Neal, jb., and L. L. 

 Rhodes ( U. S. Dept. Agr., Adv. Sheets Field Oper. Bur. Soils, 1917, pp. 30, fig. 1, 

 map 1). — This survey, made in cooperation with the Iowa Experiment Station, 

 deals with the soils of an area of 271,360 acres situated in the southwestern 

 part of the State. The topography is prevailingly rolling, with conspicuous 

 broad, nearly level bottoms along the streams. The elevations range from 1,000 

 to 1,260 ft, above sea level, and the area is said to possess excellent natural 

 drainage. 



