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Some Problems of Evaporation. London, 1918. 
Problems of Denudation. London, 1918. 
7. Mrek ALEexanpeER. — The migration of fish. London, 1916. 
8. Mrcgaup FéLix. — N. 5 lavori di fisico-chimica e termodinamica ; 
tutti compresi nel quadriennio; cioè : 
Les solutions des gaz dans les liquides. Extrait des “Annales de 
Physique ,, 9° Serie. 
Contribution à Vétude des mélanges. “ Idem ,. 
Le principe de Carnot et le principe de la dégradation et de V'é- 
nergie. Nei n' 16-17 della “ Revue scientifique , dell’11, 18, 
25 agosto 1917. 
Parois semi-perméables et Potentiels thermodynamiques. Nel n. 21 
della “ Revue générale des Sciences , del 15 settembre 1917. 
Association moléculaire et Combinaison chimique. Nel n. 23 “ IQ., 
del 15 dicembre 1917. 
9. Ripeeway WiuLiam. — The Dramas and dramatic Dances of non- 
European races in special reference to the origin of Greek 
tragedy. Cambridge, 1915. 
10. SuapLey H. and Prase. — N. 7 lavori di astronomia, tutti com- 
presi nel quadriennio, cioè : 
SuaPLEY (H.). — Outline and summary of a Study of magnitudes 
in the globular cluster Messier 13, 1916 (Publications of the 
Astronomical Society of the Pacific, 1916-1918). 
— The dimensions of a globular cluster, 1917. 
— Globular clusters and the structure of the Galactic system, 1918. 
— Studies of magnitudes in star clusters (Proceedings National 
Academy of Sciences. Washington, 1916-1917): 
I. On the absorption of light in space. - II. On the se- 
quence of spectral types in Stellar revolution. - III. The 
colors of the brighter stars in four globular systems. - 
IV. On the color of stars in the Galactic clouds surrounding 
Messier 11. - V. Further evidence of the absence of scat- 
tering of light in space. - VI. The relation of blue stars 
and variables to Galactic planes. - VII. A method for the 
determination of the relative distances of globular clusters. 
Washington, 1917; 6 fasc. 
— Studies based on the colors and magnitudes in stellar clusters 
(Contribution from the Mount Wilson Solar Observatory; 
Nos 115-117, 126, 133, 151-157): 
I. The general problem of clusters. - II. Thirteen hundred 
stars in the Hercules cluster (Messier 13). - III. A cata- 
logue of 311 stars in Messier 67. - IV. The Galactic cluster 
Messier 11. - V. Color-indices of stars in the Galactic clouds. - 
