Geology — Through Museum Expeditions. 47 



Dr. J. COLIN VAUGHAN, Newark, N. J. 



Ammonites and shells from Jurassic formation, Franz Josef Land. 



UTAH STATE COMMISSIONERS, Lewis & Clark Exposition. 



Ores from the principal mines of the State. 

 IDAHO STATE COMMISSIONERS, Lewis & Clark Exposition. 



Ores from some of the principal mines of the State. 

 WYOMING STATE COMMISSIONERS, Lewis & Clark Exposition. 



Ores and oils. 

 CALIFORNIA STATE COMMISSIONERS, Lewis & Clark Exposition. 



Large series of oils and ores. 

 COLORADO STATE COMMISSIONERS, Lewis & Clark Exposition. 



Several specimens of ores. 

 W. B. FOSTER, Yukon, Alaska. 



A series of ores and rocks from Alaska. 



By Purchase. 



2 Heliophyllum obliquum. 

 2 Heliophyllum inflexum. 

 1 Heliophyllum sulcatum. 

 4 Cystiphyllum crenatum. 



1 Cystiphyllum conspicuum. 

 4 Zaphrentis caliculus. 



2 Zaphrentis callosa. 



2 Platyceras dumosum. 

 4 Heliophyllu7U conditum. 

 2 Nautilus liratus. 

 I Tricczlocrinus woodmani. 

 1 Cystiphyllum greenei. 



1 Large block of Pentamerus oblongtis. 



336 Rocks with corresponding thin sections to illustrate Rosenbusch's 

 classification of rocks. 



Series of specimens of Platinum, Gold, Monazite, Garnet, Mag- 

 netite, etc., obtained at the Lewis & Clark Exposition by treat- 

 ment of beach and river sands on concentrating tables. 



About 200 specimens of ores and rocks representing the mineral 

 resources of Oregon. 



Through Museum Expeditions. 



2 Boxes of Post-pliocene fossils from San Pedro, California, collected 



by E. O. Hovey. 

 GREENE EXPLORING EXPEDITION. 



325 Specimens of rocks and ores collected by E. O. Hovey, in Sonora 



and Chihuahua, Mexico. 

 425 Negatives made by E. O. Hovey, in Sonora and Chihuahua. 



