SEVENTH ANNUAL RECEPTION. 513 



22. Chalcopyrite (large crystals), Zacatecas. 



23. Arsenopyrite (needles) on Chalcopyrite, Zacatecas. 



24. Copper (leaf) on Datolite, Lake Superior. 



25. Struvite (hemimorphic crystals), Hamburg. 



26. Pyrite (dodecahedral) on Smoky Quartz, Thunder 



Bay, U. S. 



27. Gold in conglomerate in quartz vein, Dutch Flat, Calif. 



28. Whitneyite (fragment of only lump found). Lake 



Superior. 



29. Sapphire (twinned), Cashmere. 



30. Apophyllite (with flat pyramid), Iceland. 



31. Anglesite, with core of Galenite, Monarch, Colo. 



32. Quartz (Phantom) containing Chlorite, Chamounix. 



33. Sphalerite (tetrahedral) and Chalcopyrite Ouray, Colo., 



34. Artificial minerals. 



35. Alloys of gold made by R. Pearce. 



Mohawkite, a new Arsenide of Copper and Nickel, from 

 the Mohawk Mine, Keweenaw Point, (CuNi)^As. Ex- 

 hibited by J. F. Kemp. 



J 



PALEONTOLOGY. 



In Charge of Gilbert van Ingen. 



Skeletons and Restorations of Fossil Vertebrates Chiefly 

 from the Tertiary Rocks of Western America. Ex- 

 hibited by the Department of Vertebrate Paleon- 

 tology, of the American Museum of Natural History, 

 Henry F. Osborn, Curator. * 



Mounted Skeletons of Two Primitive Carnivorous Mam- 

 mals (Creodonts) from the Eocene Badlands of Wyo- 

 ming. 



a. Oxycena, from the Lower Eocene Badlands of the Big 

 Horn Basin. 



