22 Catalogue of Museums. 



134 — Pumice. Variety of obsidian. 



Lipari Isles, Mediterranean. 



135— Cellular Basalt. 



Lipari Isles, Mediterranean. 



136 — Fossiliferous rock, containing shells of Brachiopods. 

 Near Missouri River. 



Presented by Regent Twamley, in 1885. 



137 — Banded calcareous rock, or marble. Gibraltar, Spain. 

 Presented by Mrs. C. L. Wording, Grand Forks, '86. 



138 — Amethyst crystals. North Shore of Lake Superior, 

 Canada. 



Presented by Henry Montgomery, University of 

 North Dakota. 



139 — Specular Iron Ore. Near Marquette, Michigan. 



Collected and presented by Henry Montgomery, 

 University of North Dakota. 



140-142 — Champlain Clay. Quaternary Period. Taken by the 

 Government dredge (in charge of Mr. Davenport) sev- 

 eral feet below the bed of the Red River, near Grand 

 Forks, in 1887. 



Samples presented by Henry Montgomery, Univer- 

 sity of North Dakota. 



143 — Cedar wood. Taken from a tree, ten inches in diama- 

 ter, found, in 1883, in a horizontal position, nine feet 

 beneath the bottom of a coulee, on the farm of Mr. 

 Alex. McKenzie, Milan Township, Grand Forks Co., 

 Dakota. 



Presented by Alex. McKenzie, Esq., in 1886. 



144 — Selenite. A ball of twin crystals found in clay many 

 feet below the surface, near the Turtle Mountains, 

 Dakota. 



Presented by Mr. G. Makee, of Dunseith, in 1888. 



145 — Peat or Turf. 



Haspelmoor, Bavaria. 



146 — Serpentine. 



Bridgeport, Conn, 



