DEPARTMENT OF MINERALOGY. 133 



examined : Sternbergite, Argentopyrite, Argyropyrite, and 

 Rittingerite. 



Specimens of Augite, Xenotime, Cryptolite, Orpiment, 

 Calamine, and other minerals, have been crystallographically 

 and optically examined. 



A description of Ullmannite has been published. Sixty- 

 two specimens have been chemically examined, including four 

 doubtful meteorites ; eight specific-gravity determinations 

 have been made ; quantitative analyses of a Limestone, of 

 Cornish Danalite, and of Helvite, have been made. 



The minerals in the case-ends, the rocks in the wall-cases, 

 and the collection of Ambers and Resins, have all been re- 

 arranged and re-labelled. 



The reserve collections of the following species have been 

 re-arranged in the drawers according to localities, and dupli- 

 cates have been set apart : Gold, Silver, Copper, Galena, 

 Blende, Iron Pyrites, Copper Pyrites, Quartz, Garnet, Mica, 

 Chlorite, and the artificial minerals. 



A complete list of mineral desiderata has been prepared for 

 printing, and the list of rock desiderata has been continued. 



The species- and locality-labels required in the cases have 

 been prepared for printing, and also the labels for the case- 

 ends ; of these, 1,572 species-labels and 1,295 locality-labels 

 have been printed and delivered. 



Exchanges have been arranged during the year with the 

 Imperial Museum of Vienna ; Colombia College, New York ; 

 the Geological Survey of New South Wales ; Professor P. 

 Groth, of Munich; his ExcellencyJ.de Siemachko; Professor 

 J. H. L. Vogt, of Christiania. 



The following rocks have been examined, labelled, and 

 re-arranged, and duplicates have been set aside : Vitreous 

 rocks. Volcanic agglomerates, Trachytes, Phonolites, Mela- 

 phyres, Syenites, Diorites, Gabbros, Minettes, Picrites, Eclo- 

 gites. Serpentines, Gneisses, and Schists ; 220 drawers of 

 specimens and 971 rock-sections have been examined for this 

 purpose. 



The following have been re-arranged in the drawers and, where 

 necessary, labelled : the rocks of the Antarctic Expedition, 

 1839-43 ; the rocks from Bohemia, Vesuvius, Fernando No- 

 ronha, India, Japan, and Java. 



Eighty-nine microscopic sections of rocks and minerals, and 

 thirty-five of meteorites, have been prepared ; twelve meteorites 

 have been cut for exchange, and the Ovifak iron has been 

 cleaned and re-varnished. 



Department&l Library. 



To the Departmental Library have been added 202 separate 

 works (in 201 volumes), 141 memoirs and pamphlets, six parts 

 of works not yet completed, and three maps. 



0.108. 13 Of 



