8 



T 3. Report on Huntingdon county, by I. C. White. With a colored geo- 

 logical map of the county ; and numerous sections. 8°, pp. , 1885. Price 

 S , postage $ . (In press.) 



T 4. Report on Centre county, by E. V. D'Invilliers; also, special report 

 by A. L. Ewing; and extracts from report to Lyon, Shorb & Co., by J. P. 

 Lesley. With a colored geological map of the county, 13 page plates of local 

 maps and sections, and 15 cuts in the text. 8°, pp. 464, 1884. Price $0 80, 

 postage $0 19. 



See also report on the line of the Terminal Moraine, Z. 



SOUTH-EASTERN PENNSYLVANIA. 



C. Report on York and Adams counties, by P. Frazer. With one folded 

 map of a belt of York county through York and Hanover, 6 folded cross sec- 

 tions, and two page plate, microscopic slices of dolerite. 8°, pp. 198, 1876. 

 Price in paper §0 85, postage $0 10. (Note. — The colored geological county 

 map o/ York is published in the Atlas to C 8.) 



C 2. Report on York and Adams counties, (South Mountain rocks, iron 

 ores, <fcc.,) by P. Frazer. With one general map of the district; 10 folded 

 cross sections; and 5 page plates. 8°, pp. 400, 1877. Price $1 25, postage §0 12. 

 (Note. — The colored geological county maps of Adams is published in D 5.) 



C 3. Report on Lancaster county by P. Frazer. With nine double page 

 lithographic views of slate quarries, and Indian-pictured rocks ; one plate of 

 impressions on slate and one page plate microscopic section of trap ; and an 

 atlas. 80, pp. 350, 1880. Price of report and atlas $2 20, postage $0 25. 



(C 3.) Atlas of 13 sheets :— Colored geological map of York county; 

 colored geological map of Lancaster county; Susquehanna river section 

 (Sheets 1, 1A, 2, 2A, 3, 4) ; Lancaster section ; Pequea section ; Muddy run 

 section ; Chestnut-hill mines ; Gap nickel mine. (Note. — Atlas sold only with 

 report.) 



C 4. Report on Chester county ; General description, pp. 214, by J. P. 

 Lesley ; Field notes in the townships, pp. 215-354, by P. Frazer. With a col- 

 ored geological county map, a photographic view of contorted schists, and 12 

 page plates. 8°, pp. 394, 1883. Price $0 75, postage |0 18. 



C 5. Report on Delaware county, by C. E. Hall. With a colored geolog- 

 ical county map ; a contour line map around Media; 30 photographic page- 

 plate views of granite quarries, Kaolin pits, Ac, and 4 page plates of altered 

 micas. 8°, pp. , 1885. Price % , postage $ . (Partly printed ; but 

 publication delayed.) 



C 6. Report on Philadelphia and the southern parts of Montgomery 

 and Bucks counties, by C. K. Hall. With a colored geological map of the belt 

 of country between Trenton and Delaware county (in 3 sheets) ; a sheet of 

 colored cross-sections, and 24 cuts in the text. 8°, pp. 145, 1882. Price 51 65, 

 postage 50 13. 



E. Part I of (historical introduction to) a report on the Azoic rocks, by T. 

 S. Hunt. 8°, pp. 253, 1878. Price $0 48, postage 50 12. 



