19Q 
ADDENDA. 
Non-metallic Minerals. 
Horse-shoe Case, 
41a. Graphite, or Plumbago, 
large block exhibiting columnar 
structure. 
Nijnei Tunguski, E. of Turukansk, 
R. Yenisei, Siberia. 
Presented by M. Siderov, 1864. 
(Placed underneath Case A.) 
Case G. 
420a. Fluor Spar, crystallized 
in cubo-octohedrons, with Copper 
Pyrites, on Spathose Iron Ore. 
Neudorf Hartz. 
Case J. 
607a. Large group of Quartz 
Crystals, partially encrusted 
with Carbonate of Iron. 
Front a Copper Lode, Tavistock, 
Devonshire. 
(Placed beneath.) 
Case L. 
797b. SiLiciFiED Phragma- 
CONE of Belemnitella, in pebble 
of Hornstone, from the Drift. 
Presented by W. T. Aveline, F.G.S. 
Case M. 
1003 a to d. Four crystals of 
Almandine, or Precious Garnet, 
exhibiting combination of rhombic 
dodecahedron and icositetrahedron. 
India. 
Presented by Professor J. Tennant, 
F.G.S. 
Case N. 
1080a. Oligoclase Felspar, 
in vesicular Lava. 
Near Geelong, Port Philip, Aus¬ 
tralia. 
Presented by A. R. Selwyn.^ - 
1095a. Petalite {^Silicate of 
Alumina, Lithia, and Soda). 
Utb, Sweden. 
1119a. Mica, with embedded 
Garnets. 
' Massachusetts, U.S. 
1119b. Mica, with embedded 
crystals of Schorl, or black Tour* 
maline. 
Massachusetts. 
1119c. Mica, containing Schorl, 
juxtaposed with Garnet. 
Massachusetts. 
1119d. Plate of Mica, contain¬ 
ing an embedded prismatic crystal 
of transparent Mica. 
Massachusetts. 
Iil9e. Plate of Mica, with 
rhomboidal section of an obliquely 
embedded crystal of Mica. 
Massachusetts. 
•* 
1168a. Four sections of crystals 
of Chiastoltte, a variety of An- 
dalusite (^Anhydrous Silicate of 
Alumina^. 
Massachusetts. 
Presented by Professor Tennant, 
F.G.S. 
Case O. 
1272a. Leuchtenbergite (a 
hydrous Silicate of Alumina, 
Magnesia, and Protoxide of Iron), 
probably a variety of Chlorite. 
Schischimskaja Gora, Ural. 
1305a. Apophyllite, in large 
lustrous crystals. 
Bhore Ghaut, between Bombay and 
Poonah. 
Presented by Professor Oldham. 
Case P. 
1315a. Ittnerite {a hydrous 
Silicate of Alumina, Soda, 
Lime, &c., with Chloride of 
Sodium and Sulphate of Lime), 
Kaiserstuhl, Baden. 
1328a. Stilbite, an unusually 
fine group of crystals, with 
Apophyllite and Laumonite. 
Shore Ghaut, between Bombay and 
Poonah. 
Presented by Professor Oldham. 
1341a. Herschelite {a hy¬ 
drous Silicate of Alumina, Soda, 
and Potash). 
From the Lava Quarries, Rich¬ 
mond, 071 the Yarra, Melbourne, 
Australia. 
Presented by A. R. Selwyn. 
