NATURAL HISTORY MUSEUMS 99 



One of the most important collections in the geological 

 museum is that made by the expeditions to Patagonia conducted 

 by J. B. Hatcher in 1896-99. This consists of a very extensive 

 series of Cretaceous and Tertiary invertebrates, including a 

 large number of types of new genera and species, and of about 

 2000 mammals from the Patagonian and Santa Cruzian (Miocene) 

 beds. 



The mammals are remarkable not only for their variety, but 

 also for their state of preservation, very many complete or 

 nearly complete skeletons, representative of all the orders, being 

 among them. 



These collections form the subject of the forthcoming Reports 

 of the Princeton university expeditions to Patagonia, now in course 

 of publication. 



Mineraktgy. About 10,000 specimens. 2600 specimens: mostly 

 crystals, bequeathed to the university by the late Archibald 

 MacMartin of New York. The perfection of the specimens and 

 the number of localities represented by each species make this 

 collection one of special value. 



There are also three cabinets of minerals in the laboratory of 

 the school of science. The principal one contains over 5000 speci- 

 mens, embracing nearly every mineral species. Two smaller cabi- 

 nets, one with labeled and the other with unlabeled minerals, are 

 provided for practice with the classes, and to these the students 

 have free access. 



A very fine collection of New Jersey zinc and iron minerals 

 from the Sterling mines was recently presented to the university, 

 and is exhibited in the main laboratory. 



Historic geology. A unique collection of 5000 specimens of er- 

 ratic boulders and drift material from Switzerland; a systematic 

 series of the typical rocks and fossils of New Jersey; and one 

 of the typical rocks of New York representing the series as de- 

 scribed by the geologic survey of that state. The geologic col- 

 lections are all arranged with a special view to the purposes of 

 comparative study. 



