FOURTH FLOOR 15 
Turning to the west and again passing through the Reptile 
Corridor one enters a stately room (No. 404) devoted to minerals 
and in recognition of Mr. J. Pierpont Morgan’s many _ yjineral 
gifts to the Museum named the Morgan Hall. Here Collection. 
are the Bement Collection of minerals and meteorites, certain 
splendid crystal groups from various donors and the cabinet of 
the New York Mineralogical Club. There is a special guide for 
this hall. Copies will be found attached to the cases and they 
may be purchased of the attendant. 
The specimens in the table cases have been arranged strictly 
in accordance with the sixth edition of Dana’s System of Miner- 
alogy. The beginning of the series is in the southeast corner of 
the hall. The Sulphur specimens (Cases 1, F and J) arrest 
attention on account of their beauty and their strikingly perfect 
crystallization. Particularly choice are the specimens of Gold 
(Case 1). The mineral is shown here in sheets like rolled metal; 
in plates with crystalline edges; in matted filaments consisting 
of minute octahedra; in grouped octahedra with hollow faces, 
and in twisted plates attached to quartz. Copper is another 
native element which occurs in fine crystals (see Case 1). Among 
the sulphides (Cases 1, 2 and A) Stibnite, the sulphide of anti- 
mony, Galenite, the sulphide of lead, and Sphalerite, the sulphide 
of zinc, are valuable ores and at the same time beautifully 
crystallized minerals. Pyrite (Cases 2 and C), the sulphide of 
iron, is a very common species which is prized in every exhibi- 
tion collection on account of its showy brilliant cubes, dodeca- 
hedra and other crystal forms. Fluorite (Cases 3 and 4), Quartz 
(Cases 4, 5, H,P), the Iron Ores (Cases 6 and 7), Calcite, Malachite 
and Azurite (Cases 8, 9, 10, I, J), Beryl, including Emerald and 
Aquamarine (Case 12), Tourmaline (Cases 15, 16 and K), Barite 
(Cases 23, Q) and Crocoite (Case 24) are among the specialties of 
the collection which should not escape the notice of the visitor. 
This collection, which probably forms the best exhibition 
series of mineral specimens in the country, is almost entirely the 
gift of Mr. Morgan. 
The Museum collection of meteorites, which is one of the 
largest in the country, has been placed temporarily in 
’ : Pee Meteorites. 
Cases 25 and 26. The collection contains many rarities. 
