BUILDING AND ORNAMENTAL KTONES. 531 



Biotite gneiss. Coarse; gray. Stafford Springs, Tolland CoiiiiLy. Triiusdcll (|uarry. 

 Tonth Census, ISSO. *26277. 



Fine; gray. East Glastonbury, Hartford County. C. Ilonti^'s (j[uarry. Toutli 



Census, 1880. 2G415. 



Hornblende biotite gneiss. Fine: dark gray. Middlotown, IMiddlcsex County. 

 Centennial, 1^7(3. 17541. 



Fiue; dark gray. Iladdaiu, Middlesex^ County. I. Arnold's (|uarry. Tenth 



Census, 1880. 20327. 



Medium; dark gray. Greenwich, Fairlield County. T. Kitch's (]uariy. Tenth 



Census, 1880. 263:58. 



Medium; dark gray. Greenwich, Fairheld County. William liich's c^uarry. 



Teuth Census, 1880. 2()33l>. 



Coarse; dark gray. North ISridgeport, Fairheld County. W. Beer's quarry. 



Tenth Census, 1880. 2GG1'J. 



Granite. Turned columu of coarse i)ink porphyritic granite. IG inches high and G 

 inches in dianu-ter. Leete's Island, Now Haveu County. Centennial, 1876. 1756G. 



Diabase. Mesozoie; fuio and compact ; dark gray; nearly Idack on a iiolished sur- 

 face. Usiul chielly for street pavements. West Kock, New Haven County. C. 

 W. Blakeslee's (piari-y. Tenth Ccinsus, 18SU. 2.")912. 



Sandstone. Triassie; brown; mediiun. 12-inch cube. Portland, Middlesex County. 



Shaler it Hall Quarry Company. Centennial, 1876. 17r)34. 

 Triassie; coarse; bi'own. I'ortland, Middlesex County. 17536. 



Triassie; medium; brown. Portland, Middlesex County. Middlesex quarry. 



Centennial, 1^76. 175.")7. 



— — Triassie; medium; brown. I'ortland, Middlesex County. Middlesex Quarry 

 Company. 'J'entii Census. 2.">424. 



Triassie; fine; brown. Portland, Middlesex County. Qiian-y of Shaler it 



Hall. Tenth Census. 2.')4H3. 



Triassie; fine; brown. I'ortland, Middlesex County. Quarry of Brainard & 



Co. Tenth Census. 26077. 



Triassie; m(^diulu; red. ManchesLer, Hartford Couul-y. C. O. Woleott's 



(jnari-y. Tenth Census. 2()12'J. 



Triassie; fine; red. Manchester, Hartford County. (;. O. Woleott's quarry. 



Tenth C(!nsus. 2G129. 



Triassie; coarse; reddish gray. East Havtm, New Haven County. IJobert 



Kedtield. Tenth Census. 2G4.''.3. 



Quartzite. Potsdam; reddish brown ; line and compact ; us(id for general building, 

 tiling, and ornamental work. Sioux Falls, Minnehiiba County. 'I'luith Census. 

 26(J62. 



Potsdam; light red ; tine and compact ; us(ul for general building, tiling, and 



ornamental work. Sioux Falls, Minnehaha County. J. L. Phelps's (quarry. 

 Ttuith Census-. 26()G!5. 



DELAWARE. 



Augite hoinblende gneiss. Fine; dark gray. Near Wilmington, N(!w Castle 

 County. P. P. Tyro's quarry. Tenth Census, 1880. 25401. 



Dolomite [marble]. Lower Silurian; white; erystalline. Iloekessin, New Castle 

 County. Jackson Lirao and Marble Company. Tenth Census, 1880. 25402. 



