12 TRANSACTIONS OF THE [OCT. 12, 



The subject was discussed by the Chairman and by Prof. Mar- 

 tin, the Secretary, and the author of the paper. 



October 12th, 1885. 



Stated Meeting. 



Vice-President Dr. 0. P. Hubbard in the chair. 

 Fourteen persons present. 



The Chairman exhibited and described 



two varieties of the new red sandstone used for 

 building in new haven, conn. 



(Abstract.) 



Tlie first, from an extensive north and south ridge in East 

 Haven, is composed chiefly of red feldspar and quartz. Some- 

 times it is a true conglomerate of Archaean pebbles in a feld- 

 spathic base, and it lies in massive beds, with a moderate easterly 

 dip. 



It has been used as underpinning, platforms, door-sills, and 

 walls of buildings for very many years — nearly two centuries, 

 and side by side with varieties of the Portland stone. It is re- 

 garded as by far the best and most permanent, and is now in 

 great favor for fine house-walls and public buildings. 



The second specimen is from Corse Hill, ScotUmd, near Car- 

 lisle, England, and is often called "Carlisle stone." It is now 

 used in the outside finish of a new Yale College building. It 

 cuts very easily, and has an agreeable color, but is believed to be 

 not adapted to our climate wheti exposed to the weather. It is 

 known here, New York, in several buildings. The portico of 

 the Murray Hill Hotel, built of this, seems already to be fading. 

 Some 110,000 cubic feet have been used in the interior of the 

 Capitol at Albany, and the impression is most agreeable. 



This rock is made up of exceedingly thin and regular layers, 

 and has a uniform deep red tint. It has a light specific gravity, 

 weighing per cubic foot 141 pounds, while the Medina sand- 



