422 
Proceedings of the Royal Society of Edinburgh. [Sess. 
The folloioing were presented by James Burgess , G.I.E. , LL.D. ( December 1912) ; — 
Euler (L.). Methodus inveniendi Lineas Curvas Maximi Minimive proprietate 
gaudentes, etc. 4to. Lausannae and Genevae, 1744. 
Fuss (P.-H.). Correspondance Mathematique et Physique de quelques Celebres 
Geometres du XVIII® me Siecle. Tomes I., II. 8vo. St Petersbourg, 
1843. 
Gill (C.). Application of the Angular Analysis to the Solution of Indeterminate 
Problems of the Second Degree. 8vo. New York and London, 1848. 
Lubbock (J. W.). On the Theory of the Moon and on the Perturbations of the 
Planets, Parts I.-YIII. 8vo. London, 1834-1850. 
Various Scientific Tracts. 8vo. London, 1830-40. 
The following were presented by the Family of the late Professor George Chrystal 
( February 1912); — 
Delebecque (Andre). Les Lacs Frangais. 4to. Paris, 1898. 
Forel (F. A.). Le Leman: Monographie Limnologique. Tomes, I., II., and III. 8vo. 
Lausanne, 1892-1904. 
Hildebraiidsson (M. le Dr H. H.) et Teisserenc de Bort (M. Leon). Les Bases de 
la Meteorologie Dynamique ; Historique — Etat de nos Connaissances. Tomes 
I. et II. 8vo. Paris, 1907, 1900. 
Lyons (Capt. H. G.). The Physiography of the River Nile and its Basin. (Survey 
Dept., Egypt.) 8vo. Cairo, 1906. 
Also numerous Pamphlets dealing with the subject of Seiches, a box of lantern slides 
illustrating Professor Chrystal’s work on Seiches, and some photographic 
negatives. 
The following were presented by Mons Jean Mascart , Paris ( December 1912); — 
Becquerel (Mm. A. E.). Resume de THistoire de Ffllectricite et du Magnetisme. 
8vo. Paris, 1858. 
Berthelot (M.). Chimie Organique fondee sur la Synthese. Tomes I., II. 8vo. 
Paris, 1860. 
Legons sur les Methodes Generales de Synthese en Chimie Organique. 8vo. 
Paris, 1864. 
• — — - — La Synthese Chimique. 8vo. Paris, 1876. 
Berzelius (J. J.). Theorie des Proportions Chimiques. (2 eme edition.) 8vo. 
Paris, 1835. 
Traite de Chimie. (Nouvelle edition.) Tomes I., II., III. 8vo. Paris, 
1838-9. 
Beudant (F. S.). La Mineral ogie et la Geologie. 12mo. Paris, 1851. 
Cahours (A.). Legons de Chimie Generale Elementaire. Tomes I., II. 12mo. 
Paris, 1855-6. 
— — Traite de Chimie Generale Elementaire (Chimie Organique). Tomes I. II., 
III. 12mo. Paris, 1874-5. 
Caumont (M. de). Excursions Archeologiques. 8vo. Paris, 1858. 
Dupuit (J.). Etude sur le Mouvement des Eaux Courantes. 8vo. Paris, 1848. 
Favre (P. A.) et Silbermann (J. T.). Recherches sur les Quantites de Chaleur 
Degagees dans les Actions Chimiques et Moleculaires. 8vo. Paris, 1853. 
