DEPARTMENT OF MINERALOGY. 145 



Flinkite and Tephroite ; Harstigen, Pajsberg, Sweden. 

 Apophyllite ; Syhadree Mountains, Bombay. 

 Dahllite ; Bamle, Norway. 



Quartz, showing oolitic structure ; Centre County,' Penn- 

 sylvania. 



Fluor and Tourmaline ; Saxony. 



By Exchange : — 



Wollastonite ; St. Lawrence County, New York, U.S.A. 



Rhodonite ; Franklin, New Jersey, U.S.A. 



Turquoise ; Los Cerillos, New Mexico, U.S.A. 



Chalcedony and Geyserite ; Yellowstone National Park, 

 Wyoming, U.S.A. 



Wood Opal; Montana, U.S.A. 



Cryolite, Gearksutite and Pachnolite ; Pike's Peak, Colorado, 

 U.S.A. 



Descloizite and Vanadinite ; Georgetown, New Mexico. 

 U.S,A. 



Utahite ; Utah, U.S.A. 



Genthite ; Douglas County, Oregon, U.S.A. 



Polydymite ; Sudbury, Ontario, Canada. 



Dumortierite ; Yuma County, Arizona, U.S.A. 



Plattnerite ; Mullan, Idaho, U.S.A. 



Messelite ; Darmstadt. 



Of the above minerals the following species and varieties 

 are new to the collection. : — 



Hovite, Friedelite, Langbanite, Synadelphite, Hsematosti- 

 biite, Arseniopleite, Nullabergite, Pleurasite, Pleonectite, 

 Anthochroite, Mixite, Dudgeonite, Michel-16vyite, Ref- 

 danskite, Phacellite, Hohmannite, Sideronatrite, Argyro- 

 pyrite, Jalpaite, Semseyite. Laubanite, Arsenical Bismuth, 

 Beegerite, Amarantite, Rionite, Uranosphaerite, Voglianite, 

 Hofmannite, Boryslavite, Messelite, Flinkite, Heliophyllite, 

 Pinnoite, Picromerite. 



Rocks. 



By Presentation : — 



700 Rock-specimens collected by the Challenger Expedition; 

 by the Government, through Dr. John Murray, F.R.S, 



77 Rock-specimens, principally from Guernsey ; by B. B. 

 Woodward, Esq., f.g.s. 



22 Rock-specimens, principally from Auvergne ; by H. A. 

 Miers, Esq., m.a. 



Vesicular Lava; Rio Pedregal, S. America; by E. Whymper, 

 Esq. 



Eight rocks and minerals ; Bahia, S. America ; by D. W. 

 Barker, Esq. 



79 Rocks and minerals from Madagascar; by Rev. J. 

 Wills. 



12 specimens of Variolite and associated rocks from the 

 Cottian Alps ; by J. W. Gregory, Esq., f.g.s. 



0.81. K Volcanic 



