SIXTH ANNUAL RECEPTION. 79 



q. Column of Halite (crystallized from natural solution), 



Great Salt Lake ? Utah, 

 r. Smoky Quartz (colossal crystal), Auburn, Me. 

 s. Smoky Quartz (parallel crystallization), Auburn, Me. 



2. Exhibit of Department of Mineralogy, Columbia Uni- 

 versity. 



a. Goldschmidt's Two Circle Application Goniometer. 



b. Fuess's Student Goniometer No. IVa. 



c. Goldschmidt's Goniometer Lamp. 



d. Fuess's Pyroelectric Apparatus after Kundt. 



e. Suite of microphotographs showing the figures pro- 

 duced on crystal faces by means of the etching method. 

 Prepared by H. P. Whitlock. 



f. Suite of microscope slides showing etching figures on 

 crystals of Gypsum, Natrolite, Calcite, Rhodochrosite, 

 Siderite, Apatite, Fluorite, Cerussite, Calamine, Pyrite, 

 and Biotite. Prepared by H. P. Whitlock. 



g. Marshite (Copper Iodide) Broken Hill Mines, New 



South Wales. 



h. Tocornalite (Silver Mercury Iodide), Broken Hill 

 Mines, New South Wales. 



i. Clinohumite, Monte Somma, Vesuvius. 



/. Chalcotrichite, matted. Old Dominion Mine, Arizona. 



k. Hessite, large crystal. Botes, Transylvania. 



/. Alexandrite, large crystal. Emerald Mines, Urals. 



in. Silver, twinned cubes, Lake Superior. 



n. Anglesite, large crystal, Wheatley Mine, Penn. 



0. Ramosite, Ramos, Mexico. 



/. Olivenite, large crystal, Mark Valley Mine, Cornwall. 



q. Capped quartz, England. 



r. Coquimbite Crystals, Atacama, ChiU. 



s. Rubellite, Schaitausk, Urals. 



t. Titanite, twin crystals, Renfrew, Ontario. 



u. Beryl, terminated crystals, Mursinka, Urals. 



The specimens and apparatus have been acquired by the 

 Department during the year. Specimens / to u are from the 



