252 
Proceedings of the Royal Society of Edinburgh. 
Ritchie, James. The Influence of Man on Animal Life in Scotland. A 
Study in Faunal Evolution. 8vo. Cambridge, 1920. 
Rolf, Bruno. Tables Psychrometriques Portatives, calculees selon la 
formule Svensson-Ekholm. (Station d’Explorations Scientifiques 
d’Abisko.) 8vo. Stockholm, 1919. {Presented.) 
Scottish National Antarctic Expedition. Report of the Scientific Results 
of the Voyage of S.Y. “Scotia,” 1902-04. Vol. VII: Zoology. 4to. 
Edinburgh, 1920. ( Presented .) 
Silberstein, L. Report on the Quantum Theory of Spectra. 8vo. London, 
1920. {Presented by Adam Hilger , Ltd.) 
Spallanzani, Lazare. Observations et Experiences faites sur les Animal- 
cules des Infusions. Vols. I and II. 8vo. Paris, 1920. {Presented.) 
Sparn, Enrique. Bibliografia de la Geologia, Mineralogia y Paleontologia 
de la Republica Argentina, 1900-1914. (Academia Nacional de 
Ciencias, Miscelanea, No. 2.) La. 8vo. Cordoba, 1920. {Presented.) 
Stieltjes, Thos. Jan. (Euvres completes de. Tom. II. (Publiees par les 
soins de la Societe Mathematique d’ Amsterdam.) 4to. Groningen. 
1918. {Presented by the above Society.) 
Tredgold, A. F. Mental Deficiency (Amentia). 3rd edition. 8vo. London, 
1920. {Presented by the Author.) 
Whitman, C. H. A Subject Index to the Poems of Edmund Spenser. 
(Published under the auspices of the Connecticut Academy of Arts and 
Sciences.) 8vo. New Haven, 1918. {Presented.) 
