226 BIOLOGICAL EFFECTS OF RADIATION 



measurements. Monthly Weather Rev. 55: 155-169. 1927. (See Table 2, 

 pp. 155-156.) 

 9. Kimball, Herbert H. Measurements of solar radiation intensity, and deter- 

 minations of its depletion by the atmosphere. Monthly Weather Rev. 58: 

 43-52. 1930. 



10. Kimball, Herbert H. Solar radiation intensities in Arctic regions. Gerland's 

 Beitr. Geophys. 32: 101-105. 1931. [Summarizes data submitted by C. R. 

 Kallquist. See also (11) below.] 



11. Kimball, Herbert H. Solar radiation intensities within the Arctic Circle. 

 Monthly Weather Rev. 59: 154-157. 1931. 



12. LiNDHOLM, F. Sur I'insolation dans la Suede septentrionale. Kungl. Svens. 

 Vetenksapsakad. Handl. Stockholm 60 (No. 2): 1-24. 1919. 



13. Thomson, Andrew. Solar radiation observation at Apia, Samoa. Monthly 

 Weather Rev. 55: 266-267. 1927. 



14. Westman, J. Mesures de I'intensite de la radiation solaire faites en 1899 et en 

 1900 a la station d'hivernage suedoise a la bale de Treurenberg, Spitzberg. 

 Mission suedois. Stockholm. Tome 2. Section VIII. B. 1904. 



Manuscript received by the editor November, 1934. 



