10 EXPEKIMENT STATION RECORD. 



iiK-hules analyses of 13G samples of hat guano and G samples of soil. Deter- 

 minations are also given of the moisture in the soil and the i)rotein content of 

 the wheat of 25 plats. The results are iuterp-reted as indicating a very slight 

 increase of jjrotein in whc-it grown on soil with a liiiiited amount of moisture. 



The chemical laboratory of the Swedish Royal Agricultural Academy, 

 1856-1906, II. (J. SoDERBAUM (HtorkhoJni, lUiKi. iip. GO, fii/y. G).—\ sketch of 

 the laboratory with biographical notes of the directors, A. Miiller, C. E. Berg- 

 strand, L. F. Nilson, and the present author, and a complete bibliography of the 

 publications of the laboratory during the iiast .10 years. — r. w. woll. 



Report of the chemical control station at Trondhjem, 1905, E. Solbero 

 (Clirisliaiiia, JDO.l, pp. 5S). — The reiK)rt contains the usual ta])ular statements 

 of the results of analyses of agricultural products made during the year, includ- 

 ing soils, soil amendments, fertilizers, peat and peat litter, feeding stuffs, dairy 

 products, human foods, also seed analyses. — f. w. woll. 



METEOROLOGY— WATER. 



Practical treatise on the weather, O. Freyhe (Praliischc Wetfcrkinnle. 

 Berlin: /'. rorrii. lixil], pp. ¥111 + 17:1 iUiis.). — This claims to be a simple 

 explanation of the use of weather maps in connection with local weather ob- 

 servations. 



Instructions for cooperative observers (U. 8. Dept. Agr., Weather Bur. 

 Doe. :i'i7. pp. 31, figs. 10). — This Is the third edition of this pamphlet, which is 

 designed " to furnish cooperative observers with brief instructions for their 

 guidance in taking and recording observations, more especially of temperature 

 and rainfall." 



Summaries of temperatures, rainfall, sunshine, and evaporation, E. F. 

 Ladd {North D<iJ:ota 8ta..Rpt. 1905, pp. 16-10). — These summaries show that the 

 mean temperature for 1905 was 39.4.3° F., the maximum 93, in August, the 

 minimum — .34, in February. The total rainfall was 30.70 in. The average 

 monthly evaporation from water surface for the 5 months May to September, 

 1905, was 5.20 in. A summary of observations on evaporation for the same 

 period during the 4 years 1002-1905 shows that during 1902 the evaporation 

 was 1.96 times the rainfall for the same period, in 1903 it was 2.58 times as 

 great, in 1904 it was 2.47 times as great, and in 1905 the rainfall as compared 

 with evaporation was as 1 to 1.003 — that is, the evaporation was practically 

 (■(piivalent to the rainfall. 



Studies on the diurnal periods in the lower strata of the atmosphere, 

 F. H. BiGELOw (U. S. Dept. Agr., Weather Bur. Doc. SU, VP- 51, fv^- 71).— 

 Articles published separately in the Monthly Weather Review, February to 

 August, 1905, are combined in this document. The subjects treated are diurnal 

 periods of temperature, barometric pressure, vapor tension, the electric ])otential, 

 coefficient of dissipation, terrestrial magnetic field, and the aperiodic disturb- 

 ances; the variable action of the sun and its effect upon terrestrial weather 

 conditions ; and a general review of the status of cosmical meteorology. 



Meteorological service for forecasting weather, H. Dufour {Chron. Agr. 

 Vaud, 10 ( toot)). No. 0, pp. 276, 277). — A brief statement regarding the organiza- 

 tion of the meteorological service (if the Swiss department of agriculture and 

 commerce with reference to dissemination of weather forecasts, especially by 

 means of telephones. 



Meteorology of Tunis, winter of 1905-6, (J. Ginestous (Bill. Dir. Agr. ct 

 (U,ni. \Tii)iiK\, 10 {1006), No. 38, p/i. ll'i-t.iS. pi. 1). — A sunmiaiy of oI)serva- 

 ti;>::; on pressure, temperature, rainfall, evaporation, humidity, etc., at a large 

 . number of stations in different parts of Tunis. 



