289.

1872-Lesley (J. P.). (No title.) Scale, 1 inch to 1 mile.

Accompanying "Saint Clairsville and Bedford Railroad, and Dunning's Creek fossil iron ore." Proc. Amer. Phil. Soc., Vol. XIII, p. 256. Philadelphia, 1873.

In one color and geological indications.

290.

1872-Smith (S.). Topographical map of Gaines Coal Basin, in Gaines Township, Tioga County. Contour curves, 100 feet apart. Scale, 2,000 feet to the inch.

Accompanying "2d Geol. Surv. Pennsylvania." Report of progress, vol. G. G. G., by Andrew Sherwood. Harrisburg, 1880.

Black etching.

291.

1872-Strauch and Cochran. Map of the first and second anthracite coal fields of Pennsylvania.

Accompanying "Coal regions of America," by James Macfarlane. p. 17. New York, 1873.

Black etching.

292.

1873-Lesley (J. P.). Topographical map of Pennsylvania, colored for the principal geological formations.

Accompanying "Coal regions of America," by James Macfarlane. New York, 1873.

293.

1873-Lesley (J. P.). A study, in ten-foot contour-lines, of the structure and erosion of Brush Mountain, showing the outcrops of the two upper silurian fossil iron ore beds passing Tyrone Gap, Blair County, Pennsylvania.

Accompanying "A study of the structure and erosion of Brush Mountain." Proc. Amer. Phil. Soc., Vol. XIII. Philadelphia, 1873.

Black, with geological indications.

294.

1874-Clark (E., jr.). A map in ten-foot contour lines, showing the ranges of brown hematite ore banks in a portion of Lehigh County. Scale, 3,200 feet to the inch.

Accompanying "2d Geol. Surv. Pennsylvania. Brown hematite ore ranges of Lehigh County," by Frederick Prime, jr. Vol. D. Harrisburg, 1875. Black etching, with geological indications. See note by State geologist, page 67.

295.

1874 Frazer (P., jr.) and Lehman (A. E.). A map of the central belt of brown hematite ore mines in York and Adams Counties. Scale, 1 mile to the inch.

Accompanying "2d Geol. Surv. Pennsylvania. Report of progress in York and Adams Counties," by Persifor Frazer. Vol. C, p. 196. Harrisburg, 1876.

296.

1874-Lesley (J. P.) and Platt (F.). A study, in twenty-foot contour lines, of the structure and erosion of a part of the lower silurian iron ore region northeast of the Little Juniata River, in Huntingdon and Centre Counties, Pennsylvania. Scale, before reduction by photograph, 3.325 inches to 1 mile.

Accompanying "The brown hematite ore banks of Spruce Creek, Warrior's Mark Run, and Half Moon Run, in Huntingdon and Centre Counties, Pennsylvania, along the line of the Lewisburg, Centre County, and Tyrone Railroad." Proc. Amer. Phil. Soc., Vol. XIV, p. 176. Philadelphia, 1876. Black, with geological indications.

297.

1875-Wrigley (H. E.). Map B, the Pennsylvania oil regions proper, with all adjoining developments in Ohio, New York and West Virginia.

Accompanying "2d Geol. Surv. Pennsylvania." Special report on the petroleum of Pennsylvania, by Henry E. Wrigley, Vol. J. Harrisburg, 1875.

Black etching.

298.

1875-Frazer (P., jr.) and Lehman (A. E.). General map of the ore ranges of York and Adams Counties. Scale, 3 miles to 1 inch. Accompanying "2d Geol. Surv. Pennsylvania." Report of progress in York and Adams Counties, by Persifor Frazer. Vol. C, p. 64. Harrisburg, 1876.

299.

1876-Boyd (E. F.). Map of the first and second anthracite coal fields of Pennsylvania.

Accompanying "Remarks on the coal measures and oil produce of the United States of America, collected during a visit to that country in the autumn of 1875." Trans. North of England Inst. Mining Engrs., Vol. XXV, Plate XLIV. Newcastle-upon-Tyne, 1876.

300.

1876-Boyd (E. F.). Map showing the anthracite coal fields of Pennsylvania with their outlets to tide-water.

Accompanying "Remarks on the coal measures and oil produce of the United States of America, collected during a visit to that country in the autumn of 1875." Trans. North of England Inst. Mining Engrs., Vol. XXV, Plate XLV. Newcastle-upon-Tyne, 1876.

Black etching.

301.

1876-Boyd (E. F.). Map of the anthracite coal fields of Pennsylvania. Accompanying "Remarks on the coal measures and oil produce of the United States of America, collected during a visit to that country in the autumn of 1875." Trans. North of England Inst. Mining Engrs., Vol. XXV, Plate XLVI. Newcastle-upon-Tyne, 1876.

302.

1876-Boyd (E. F.). Oil regions of Pennsylvania, U. S.

Accompanying "Remarks on the coal measures and oil produce of the United States of America, collected during a visit to that country in the autumn of 1875." Trans. North of England Inst. Mining Engrs., Vol. XXV, Plate XLIX. Newcastle-upon-Tyne, 1876.

Black, with geological indications.

303.

1876-Lesley (J. P.) and White (I. C.).

ing outcrops of the lower coals.

Map of southern Butler, show-
Scale, 2 miles to the inch.

Accompanying "2d Geol. Surv. Pennsylvania." Report of progress in the Beaver River district, by I. C. White. Vol. Q. Harrisburg, 1878.

304.

1876-Lesley (J. P.) and White (I. C.). Map of North Allegheny, showing outcrops of the Pittsburgh and upper Freeport coals. Scale, 2 miles to the inch.

Accompanying "2d Geol. Surv. Pennsylvania." Report of progress in the Beaver River district, by I. C. White. Vol. Q. Harrisburg, 1878.

305.

1876-Lesley (J. P.) and White (I. C.). Map of Beaver County, showing outcrops of the Pittsburgh, Upper Freeport, and Kittanning coals. Scale, 2 miles to the inch.

Accompanying “2d Geol. Surv. Pennsylvania." Report of progress in the Beaver River district, by I. C. White. Vol. Q. Harrisburg, 1878.

306.

1876-Lesley (J. P.) and Sherwood (A.).

County. Scale, 2 miles to the inch.

Geological map of Potter

Accompanying "2d Geol. Surv. Pennsylvania." The geology of Potter County, by Andrew Sherwood. Vol. GGG, Harrisburg, 1880.

307.

1876—Lesley (J. P.) and Sherwood (A.). Geological map of Wyoming County. Scale, 2 miles to 1 inch.

Accompanying “2d Geol. Surv. Pennsylvania." The geology of Pike and Monroe Counties, by I. C. White. Report of progress. Vol. G6. Harrisburg, 1882.

In the same volume G 6 there is a large geological map of Pike and Monroe Counties, with the date of 1882 on the map, and consequently posterior to the limit of this catalogue. 1881.

308.

1876-Prime (Fred.). Geological and topographical map showing the limestone of Lehigh County including the ranges of brown hematite ore banks.

Accompanying "23 Geol. Surv. Pennsylvania." Report of progress, 1875, 76. Lehigh district. Vol. DD. Harrisburg, 1878.

In four sheets.

309.

1876-Schellenberg (F. Z.). Map showing outcrops of Pittsburgh coal in North Huntingdon Township, Westmoreland County, Pa. Accompanying "2d Geol. Surv. Pennsylvania." Report of progress, 1876. Fayette and Westmoreland districts, by J. J. Stevenson. Vol. KK, p. 350. Harrisburg, 1877.

Black etching.

310.

1876-Sherwood (A.). Geological map of Bradford County. Scale, 2 miles to 1 inch.

Accompanying "2d Geol. Surv. Pennsylvania.” Report of progress in Bradford and Tioga Counties. Vol. G. Harrisburg (1878).

No date on the volume.

311.

1876-Sherwood (A.). Geological map of Tioga County. Scale, 2 miles to 1 inch.

Accompanying "2d Geol. Surv. Pennsylvania." Report of progress in Bradford and Tioga Counties. Vol. G. Harrisburg (1878).

No date on the volume.

312.

1876-Stevenson (J. J.) and White (I. C.). Geological map of Allegheny County.

Accompanying "2d Geol. Surv. Pennsylvania." Report of progress, 1876. Fayette and Westmoreland district. Vol. KK. Harrisburg, 1877.

313.

1877-Lesley (J. P.) and Platt (F.). A geological map of the Salisbury central coal basin in Somerset County, Pa.

Accompanying "2d Geol. Surv. Pennsylvania." Report of progress. Vol. HHH. Harrisburg, 1877.

Black, without truly any geological indications or signs.

1877-Stevenson (J. J.).

314.

Geological map of Fayette County west of

Chestnut Ridge. Scale, 2 miles to 1 inch.

Accompanying "2d Geol. Surv. Pennsylvania." Report of progress, 1876. Fayette and Westmoreland district. Vol. KK. Harrisburg, 1877.

315.

1877-Stevenson (J. J.). Geological map of Westmoreland County west

of Chestnut Ridge. Scale, 2 miles to 1 inch.

Accompanying "2d Geol. Surv. Pennsylvania." Report of progress, 1876. Fayette and Westmoreland district. Vol. KK. Harrisburg, 1877.

316.

1878—Ashburner.(C. A.). Isometric projection to illustrate the direction and amount of throw along the plan of the fault at Three Springs, Huntingdon County. Scale, 800 feet to 1 inch.

Accompanying “2d Geol. Surv. Pennsylvania." Report of progress in the Juniata district. Vol. F. Plate XVIII. Harrisburg, 1878.

Black, with geological indications.

317.

1878—Ashburner (C. A.). Geological map of a belt of country lying along the line of the East Broad Top Railroad, from the crest of Sideling Hill across Smith's, Hare's, and Great Aughwick Valleys to the crest of Black Log Mountain, Huntingdon County. Scale, 1,600 feet to 1 inch.

Accompanying "2d Geol. Surv. Pennsylvania." Report of progress in the Juniata district. Vol. F. Plate I. Harrisburg, 1878.

318.

1878—Ashburner (C. A.). Geological map of the environs of Orbisonia, at Rockhill Gap, Huntingdon County, showing the outcrops of the Clinton, Oriskany, and Marcellus iron beds.

Accompanying "2d Geol. Surv. Pennsylvania." Report of progress in the Juniata district. Vol. F. Plate II. Harrisburg, 1878.

319.

1878 Ashburner (C. A.). Geological section passing near Three Springs, Huntingdon County, constructed from exposures on and near the line of the East Broad Top Railroad, showing the order of the Devonian and Silurian strata from Plank Cabin Valley to Black Log Mountain. Scale, 1,600 feet to 1 inch.

Accompanying “2d Geol. Surv. Pennsylvania." Report of progress in the Juniata district. Vol. F. Plate XVI. Harrisburg, 1878.

In two sheets. This section is accompanied by fragments of geological maps.

320.

1878 Ashburner (C. A.) Geological section of Devonian and Silurian strata exposed along Sideling Hill Creek, extending from the East Broad Top coal basin, Huntingdon County, to the crest of Black Log Mountain, at Potts Gap, Fulton County. Scale, 1,600 feet to 1 inch.

Accompanying "2d Geol. Surv. Pennsylvania." Report of progress in the Juniata district. Vol. F. Plate XVII. Harrisburg, 1878.

In two sheets. This section is accompanied by fragments of geological maps.

1878-Frazer (P., jr.). miles to 1 inch.

321.

Geological map of Lancaster County. Scale, 2

Accompanying “2d Geol. Surv. Pennsylvania.” Report of progress in 1877; the geology of Lancaster County. Vol. CCC. Harrisburg, 1880.