BUILDING AND OUNAMKNTAL STONES. 585 



Limestone. Lower Silurian ; dark hliio-oray. LfhaiiDU, Allo;4liiMi\ Comity. Aincr- 

 icaii Society Mining Euyineers, LMHO. :i78r)U. 



Lower SiUiriati ; dark bhie-gray. Lebanon, AlleL'liciiy ('oiiuty. American So- 



ciety Mining Engineers, 1886. 378r>0. 



Lower Silurian ; dark blue-gray. Schuylkill Haven, Schuylkill C^ounty 



American Society Mining Engineers, 1886. :{7872. 

 Calcareous dolomite. Lower Silurian; gray; graunlar. Two specimen.s. Near 

 Columbia-, Lancaster Connty. C. S. Kanffman's quarry. Tenth Census, 1S80. 



2(;:5:!i. 



Lower Silurian; nearly black; pyritil'erons. Leanion Place Station, Lancaster 



County. J. Young's quarry. Tenth Census, 1880. •i.'iW)!). 



Lower Silurian ; dark; nearly black. Reading, Berks County. .lohn II. Stern- 

 burg's quarry. Tenth Census, 1880. 2()4'.57. 



Lower Silurian. Wrightsville, York County. Quarry of Ktur, Weitzel i^i Co. 



Tenth Census, 1880. 26332. 



Lower Silurian; dark gray; nearly black ; iino and com[)aet. Carlisle, Cum- 



berland County. W. F. Noble's (inarry. Tenth Census, 1880. 26302. 



Lower Silurian ; gra^^; coarsely laminated. Near Shiromanstown, Cumbrrlaud 



County. Quarry of Moses A-. Sidle. Tenth Census, 1880. 26:>01. 

 Dolomite. Lower Silurian ; black ; tine and comi)act. Easton, Northami)toii ( 'miiity. 



Quarry of George it Isaac A. Smith. Tenth Census, 1880. 2.''>767. 

 — — Ijower .Silurian ; yellowish. Two specimens. Flonrtown, Montgomery Countj'. 



American Society Mining Engineers, 1886. 37876. 



I^iwer Silurian ; light yellow, blue spotted. Flonrtown, Montg(unery County. 



American Society Mining Engineers, 1886. 37884. 



Losver Silurian ; bluish drab; compact. Philadelphia and Reading Railroad, 



Chester Valley Branch, Mclnniis Siding, Chester County. American Society 

 Mining Engineers, 1886. 378r)7. 



Lv>wcr Silurian ; light colored. Mill Lane, ChestHU- County. American Stxtiety 



Mining Engineers, 1886. 37868. 



Lower Silurian ; blue mottled. Near Pott's Landing, Berks County. Auieri 



can Society Mining Engineers, 1886. 37r.'");;. 



Lower Silurian; Light yellow; line and conii>aet. Williams Station, I'erks 



County. American Society Mining Engineers, 1886. 37886. 



Lower Silurian ; dark bluo-gray ; fine and compact. Near Lancaster, Lancas- 

 ter Connty. Westmau's quarry. Tenth Census, 1880. 26374. 



-— Low(!r Silurian; dark blue-gray; tine and compact. Near Ilarrisbnrg, Dau- 

 ])hin County. Quarry of McCormick & Co. Tenth Census, 1880. 26281. 



Lower Silurian ; dark gray ; fine and compact. Near Orbisonia, Huntingdon 



Counry. Quarry of D. Grove »t Sou. Tcuith Census, 1880, 26204 



Lower Silurian; tine; light yellow. Kerberburgh. American Society Min 



ing Engineers, 1880. 37877. 



Lower Silurian; light drab. Plymouth, Lu/erne County. American Society 



Mining Engineers, 1886. 37880. 



Lower Silurian; light colored; crystalline. Cedar Hollow, Lime ('onnty. 



American Society Mining Engineers, 1886. 3788!") 

 Limestone fmarble]. Lower Silurian ; nearly white; finegrained : compact. Mor 

 ristown, Montgomery County Centennial, 1876. 17.">73. 



Lower Silurian : light gray: crystalline.. Two specimens. Near S)ui'ig Mill 



Station, Montgomery ('ounty Cedar Grove Marbli- Works. T<Mith Census, 

 1880 25356 



