Notices of Memoirs — Geological Congress, Mexico. 375 



meetings. Their titles, somewhat abbreviated, are as follows ; — ^ 

 J. G. Aguilera, on the Geology of Mexico,* and on the Volcanoes of 

 Mexico *■ ; three papers by Professor R. J. Anderson, on the Drift, 

 Granite, and Metamorphic Eocks of Galway ; a paper by Dr. Tempest 

 Anderson on the West Indian Eruptions, and another on the Eruption 

 of Vesuvius ; H. E. Bain, on Ore Deposition in the Mississippi Valley ; 

 Professor F. Becke, on Crystallization Schistosity and Piezocrystalli- 

 zation f ; Professor "W. Branca, on Volcanoes and Fissures f ; Professor 

 S. Calderon, on Contact Phenomena % ; Professor L. Cayeux, The 

 Structure of Sandstones and Quartzites,* Insect Eggs of Lakes 

 Chalco and Texcoco and the Formation of Oolites*; Professor A. P. 

 Coleman, Interglacial Periods in Canada ; Professor T. W. E. David, 

 Glaciation in Lower Cambrian, possibly in Pre-Cambrian Time; 

 Australasia, Climate at different geological epochs * ; Climate at 

 different Geological Epochs, with special reference to Glacial Epochs ; 

 Occurrence of Diamonds in Matrix near Inverrell, New South Wales ; 

 Professor G. De Lorenzo, The Bases of the Volcanoes Vulture and 

 Etna§; Professor S. Diaz, Diary of the behaviour of the Volcano of 

 Colima, 1893 to 1905 :j:; Professor F. Freeh, on Climatal Changes 

 of the Geologic Past f ; Aviculidag of Palaeozoic habit from the Trias 

 of Zacatecas f ; Professor J. W. Gregory, Climatic Variations, their 

 Extent and Causes ; Professor U. Grubenmann, The Classification of 

 the Crystalline Schists f ; Professor Heilprin, Interrelation of Volcanic 

 and Seismic Phenomena ; Professor E. W. Hilgard, The Causes of the 

 Glacial Epoch ; Dr. E. 0. Hovey, The Western Sierra Madre of the 

 State of Chihuahua*; B. de Inkey, The Relation between the Pro- 

 pylitic state of Andesitic Eocks and their Mineral Veins * ; Dr. K, 

 Keilhack, The occurrence of Onyx at Etla f ; Professor J. F. Kemp, 

 Ore Deposits at the Contacts of Intrusive Eocks and Limestones ; Pro- 

 fessor J. Koenigsberger, on the Influence of Mountains, Lakes, etc., 

 on the Geothermal Gradient f ; Dr. G. F. Kunz, Gems and Precious 

 Stones of Mexico ; General L. de Lamothe, The Climate of North 

 Africa in the Upper Pliocene and the Pleistocene * ; Professor L. de 

 Launay, The Genesis of the Metals of Italy * ; Notes on Mines in 

 Tuscany and Elba ; W. Lindgren, The Eelation of Ore Deposits to 

 Physical Conditions ; Dr. M. Manson, Climates of Past Geologic Epochs 

 and their Cause * ; Professor S. Meunier, A Theory of Volcanic Pheno- 

 mena*; Professor A. G. Nathorst, Upper Jurassic Flora of Hope Bay, 

 Graham Land ; T. Ogawa, The Geotectonic of the Japanese Islands ; 

 Dr. C. Eenz, The Older Mesozoic Eocks of Greece f ; V. Sabatini, The 

 last Eruption of Vesuvius*; Professor G. Stefanesca, BiJiotherium 

 gigantissimum'^] J. D. Villarello, on the infilling of certain Metalli- 

 ferous Deposits*; Bailey Willis, The Geological Map of North 

 America*. The brief account of the excursions made in connection 

 with the Congress occupies pages 1289 to 1350, and a table of 

 contents is given at the end of the second volume. 



B. HOBSON. 



^ Memoirs in English except those marked * in French, t in German, % in 

 Spanish, § in Italian. 



