612 [June 20, 
An application was read for the Magellanic Premium, 
signed “ Arcturus,” on the explosion of tanks containing petro- 
leum, and the method of preventing the same. 
Prof. Cope sent a paper on the Extinct Mammalia of Valley 
of Mexico. 
Mr. Richard Vaux read a paper on the history of the Penn- 
sylvania prison system, 
Nominations Nos. 1023 to 1028, were read. 
Letters of acknowledgment were received from the Holland 
Society at Harlem (114); the Fondation Tyler (114); the 
Royal Zodlogical Society, Amsterdam (118, XVI, i); the 
Observatory at Prague (118, XVI, i); the Royal Society of 
Sciences, G6ttingen (XITI, i, ii); the Radcliffe Observatory 
(114); the Royal Observatory, Edinburgh (118, XVI, i); 
Win. Blades, 28 Abchurch Lane, London (114); the Statisti- 
sal Society, London (114). 
Letters of Hnvoy were read from the United States Consul 
at Budapest, April 29, 1884; the Royal Zodlogical Society, 
Amsterdam, June 4; the Musée Guimet, April 16, and the 
National Academy at Cordova, South America, requesting 
exchanges, 
Donations for the Library were received from the Geologi- 
cal Survey of India; Academy at St. Petersburg; Mr. Joseph 
de Lenhossek, of Budapest; Anthropological Society, Geo- 
logical Institute, Vienna; Royal Bavarian Academy; Royal 
Saxon Society; Royal Society, Gottingen; Royal Prussian 
Academy; Society at St. Gall; National Antiquarian So- 
ciety, Copenhagen; Tuscan Society of Natural Sciences, 
at Pisa; Musée Guimet and Society Agriculture, Lyons; 
Commercial Geographical Society and Meteorological Com- 
mission, Bordeaux; Institute of France, Ethnological So- 
ciety, Anthropological Society, Zodlogical Society, Geo- 
graphical Society, M. Leon de Rosney, Society of Ameri- 
canists, Society for Japanese Studies, Bureau of Longi- 
tudes, M. M. Locroy, Paris; Royal Academy of History at 
Madrid; Astronomical Society, Geographical Society, Nature, 
London; Cambridge University ; Glasgow Observatory; Pat- 
