382 Intelligence and Miscellanies. 



being carbonic oxide. Works on chemistry mention that one 

 pound of coal will furnish twenty gallons of coal gas. 



When passed through lime water, its flame could not be 

 distinguished from that of carburetted hidrogen, made in the 

 common way. Both however yielded in brilliancy to the na- 

 tural carburetted hidrogen, which is generated in such abun- 

 dant quantities in Chatauque county, on the borders of Lake 

 Erie, and with a quantity of which I was favored by several 

 friends residing in that vicinity. 



No doubt can exist of the Tioga coal becoming a satisfac- 

 tory substitute for European coal, whenever the projected wa- 

 ter communication shall render its transportation sufficiently 

 cheap and convenient." 



6. Water Cement of Southington, Conn, communicated 

 by Mr. Thomas Lowrey, at the request of Mr. Sheldon 

 Moore. — The hydraulic lime stone of Southington, is found 

 about two and a half miles east of the turnpike road, in 

 Southington, and directly east of" the meeting house. The 

 stone is of a blueish grey cast, veined with thin continuous 

 layers of slate, nearly devoid of lime. It is found near the 

 surface of the earth, and is remarkable in having a southerly 

 dip, or inclination of about fifteen degrees, while the strata 

 of slate and secondary rocks in general, incline nearly as 

 much in a north east direction. The quantity of it is doubt- 

 less inexhaustible. The operations of manufacturing it are 

 simple, though attended with considerable labor, and some 

 expense for fuel. The stone is burnt in a common kiln, like 

 quick lime, and requires about the same burning ; it is next 

 ground fine with mill stones, and is then ready for use. The 

 mode of using it, and mixing the mortar is as follows : — 

 Take about two parts of sand and one of cement and form 

 it into mortar, somewhat thinner than quick lime mortar. If 

 the sand is not good, equal parts of sand and cement should 

 be used. If the situation in which it is employed will admit of 

 its having a short time to dry, before water is admitted to it, 

 it will sooner become firm and secure. But it will set, if ex- 

 posed to water immediately, provided it has sufficient consis- 

 tency, not to be carried away by the water. The uses to 

 which it is applied are various. In addition to its use in the 

 construction of canals, it has been employed for mill dams, cis- 

 terns, cellar walls, vats, and all kinds of mason work, exposed 

 to water. It has been used, in several instances, for the out- 

 side walls of wood houses, and in some instances, for the 



