LIME. 231 



tndulated or concentric. I include under this variety, the Agaric mineral of Cleaveland and 

 other authors, as also the Oolite of mineralogists. 



LOCALITIES. 



Albany County. In the caverns which occur in the towns of Bethlehem and Knox, and 

 which have been already noticed, stalactites and stalagmites, together with the variety often 

 known by the name of Calcareous sinter, abound. These are often susceptible of a good 

 polish. On the Patroon's creek, near the city, incrustations of carbonate of lime are also 

 found, arising from the depositions of water charged with this mineral. 



Allegany County. There are several beds of calcareous tufa about a mile and a half east 

 of Portage ; and two others have been observed near Rogers' bridge, but they are of incon- 

 siderable extent. 



In my notice of the localities of marl (page 83 et seq.), I omitted to state that two deposits 

 occur in the town of Rushford ; one overlying a swamp on the land of Judge McCall ; the 

 other near the road. There is also a small deposit at Caneadea, a little above the level of the 

 valley. It is said, however, that it has not been used at either of these places for the manu- 

 facture of lime.* 



Columbia County. In the rivulet which flows from the spring at New-Lebanon, there is 

 deposited a calcareous substance of a botryoidal and reniform shape, which, if collected from 

 a place where it has been undisturbed for a considerable time, resembles a stalagmite. Cal- 

 careous tufa is frequently met with in the limestone regions of this county. The spring 

 which supplies the city of Hudson with water, is constantly depositing a calcareous tufa, 

 which encloses sticks, reeds, helices, and in fact every substance with which it comes in 

 contact. The deposit, however, is not extensive, and shows itself but little on the surface.t 



Dutchess County. Calcareous tufa is quite common in the limestone regions of this 

 county. Stalactites, stalagmites, and concreted carbonate of lime of various forms, may be 

 seen in the Spook hole, a cavern near Barnegat.J 



Erie County. Near Ellicott's mills, there is a large deposit of calcareous tufa. Many 

 tons of this newly formed rock are now suspended beneath the layers of the calciferous slate, 

 and its volume is said to be constantly increasing by successive deposits. 



Franklin County. About two miles from Chateaugay four corners, near the base of the 

 high banks of sandstone between which the Chateaugay river flows, there is a large mass of 

 calcareous tufa, which seems to have been deposited from a small brook running across its 

 bed. It is used in the vicinity as a building material, and also in the manufacture of hme. 

 The deposit is of considerable extent. 



Greene County. On the Catskill and Canajoharie railroad, and near Catskill village, there 

 are extensive deposits of calcareous tufa, which are formed by streams issuing from caverns 

 in the limestone hills in the vicinity. Sometimes the limestone is covered with a thin and 

 friable crust, which resembles the agaric mineral. 



' Hall. New-York Geological Reports, 1840. t Mather. Ibid. 1838. J Ibid. 



