NATURAL HISTORY MUSEUMS 159 



Specimens from New York, New Jersey and the west and 

 many local minerals for exchange. 



Eistmic geology. Material illustrating the Paleozoic age gen- 

 erally, the Cretaceous of America, the general Mesozoic of 

 Europe, and the Cenozoic of eastern America. 



Economic geology. 2000 specimens: ores representing all of 

 the principal western mining localities, specially those that 

 were prominent 15 years ago; iron ores and coals from various 

 parts of the United States. 



Lithology. 2000 specimens of rocks illustrating the typical for- 

 mations of America and Europe. Specimens of the local rocks, 

 and ores from the west, chiefly gold and silver for exchange. 



Zoology, 3000 vertebrates: material for a synoptic and com- 

 parative anatomic collection; the osteologic collection of the late 

 Prof. Cope, including the Hyrtl collection of nearly 1000 beauti- 

 fully prepared fish skeletons, w^hich formed the basis of much 

 of Prof. Hyrtl's studies on the osteology and of Prof. Cope's 

 work on the classification of fishes; illustrations of local fauna; 

 very complete collections of fishes; batrachians, lizards and 

 birds from Pennsylvania, New Jersey, Jamaica, the Bahamas 

 and the Grand Cayman. 



10,000 specimens of invertebrates: a collection of many groups 

 from the Bahamas and Jamaica obtained by the university ex- 

 peditions of 1887 and 1890-91; the Leidy collection of parasites, 

 including many types; the C. Pennock conchological collection; 

 the Wheatlev collection of the fresh-water mollusks of the 

 world; and a large series of models and preparations illustrat- 

 ing the embryology and anatomy of both vertebrates and inver- 

 tebrates. A vivarium containing living marine, fresh-water and 

 land animals of almost everv class. 



Botany. A herbarium of 23,000 sheets: an extensive collec- 

 tion of alcoholic specimens for class use and 1200 alcoholic 

 museum specimens illustrating comparative morphology; a set 

 of the De Koyle botanic models; and a botanic garden collection 

 including 3200 species of living plants. 



Ethnology and archeology. Five sections, each one of which is 

 in charge of a curator. 



The American section contains a very complete exhibit of 

 antiquities from the cliff dwellings of Colorado presented by 



