2(3 Twenty-fourth Report on the State Museum. 



Silicious Limestone, with veins of spar. Light Ilonse Point. 

 Cliloritic Slate. Dead River. 



A block of Silicious Iron Ore striped with red jasper, weighing 

 about four hundred pounds: placed for the present in the out-door 

 collection. Marquette Co. 



Compact and crystallized Iron Ore, representing the principal mines 

 of the Marquette iron region, with the associated Rocks : many dupli- 

 cate specimens of the same. 



Specimens of all the varieties of Rock representing the geology of 

 the Lake Superior iron region ; also a large number of duplicates. 



A collection of Rocks and Fossils from the Rocky mountains, refer- 

 red to in the preceding report, but which had not then been arranged 

 in the Museum. 



Specimens of fine Clays, showing glazed surface, with imprints of 

 rain-drops. Rocky mountains. 



Tilaniferous Iron Ore. Westport, Essex Co., JST. Y. 



Crystallized Magnetic Iron Ore, from the new bed at Mori ah, IST. Y. 



Crystals of Magnetic Oxyd of Iron, from the same locality. 



Smoky Quartz, from the old bed at Moriah, N. Y. 



Quartz, Calcareous Spar and Iron, from the old bed at Moriah. 



Smoky Quartz and Iron Ore, " '' 



Quartz, coated with Calcareous Spar, " "'^ 



Three fossil trunks of Tree-ferns {Psaroni%cs Erianus Dawson). 

 Gilboa, Schoharie county, ]^. Y. 



Slabs of the Plant-bed from beneath the Psaronius containing its 

 rootlets. 



Specimens from the strata surrounding the trunks, w^ith remains of 

 branches and other vegetation. 



By the Assistants. 



Several parts of trunks oi Psaronius Erianus Dawson. 



Large masses of the Psaronius Plant-bed. 



Two flattened pieces of Psaronius, taken from the beds surround- 

 ing the bases of the trunks, and supposed to be the upper portions 

 of the trunks, wldch had been broken off and imbedded during the 

 progress of the deposition ; the larger specimen is tliree feet in length, 

 and measures ten and thirteen inches in circumference at its ends. 

 Gilboa, N. Y. 



A large collection of Lycopodites Vanuxemi Dawson, from the 



