Fo. 112.] 43 



From HIS EXCELLENCY GOVERNOR CLARK. 



Two specimens of Iron Ore, from tlie ore beds at Clinton Prison; 

 obtained at the depth of one hundred feet beneath the surface. 



From JAMES RAY, of West-Troy. 



A specimen of Coke made from the semi -bituminous coal of the Mary- 

 land Coal Measures. 



The structure of the grain, and angle of a knot (branch) would 

 render it probable that it is of the coniferous trees of the carboni- 

 ferous era. 



The annular rings, which show the same rate of growth of the 

 pitch pine of Maryland of the present day, would indicate a climate 

 much the same as now. 



From Dr. J. R. ROMEYN, of Keeseville, Essex Co., N. Y. 



Iron Ore (three specimens;, from the Arnold bed, town of Ausable, 

 Clinton county. 



Iron Ore, from the Arnold bed (blue vein), town of Ausable, Clinton 

 county, N. Y., six miles from Keeseville. 



Iron Ore, from the Averill ore bed, at Clinton prison, Dannamora, Clin- 

 ton county, N. Y. 



Iron Ore, containing quartz crystals and calcareous spar, from the 

 Averill ore bed, at Clinton prison, Dannamora, Clinton county, N. Y. 



Prom JOHN GERHARD junior, of Albany. 



A box containing twenty-five specimens, collected from the mouth of an 

 extinct crater in the town of Volcano, Calaveras county, California. 



The following is a copy of the letter to the donor, which accompanied 

 the specimens. 



Volcano, Septeniber 30, 1855. 

 J. GERHARD junior, Esq. 



Dear Sir — In partial return for the gentlemanly courtesy I have ever 

 experienced on my visits to the Greological Rooms of the State of New- 

 York, while under your supervision; and as a mark of private esteem, 

 allow me to present you the enclosed specimens, collected from the mouth 

 of an extinct crater in this place. 



