MARYLAND GEOLOGICAL SURVEY 17 



PLATE FACING PAGE 



XXX. Cordwood for Charcoal 312 



Fig. 1.— Making a kiln 312 



Fig. 2.— Burning a kiln 312 



FIGURE PAGE 



1. Showing position of Sunderland shore-line 74 



2. Showing position of Wicomico shore-line 76 



3. Showing position of Talbot shore-line 77 



4. Diagram showing origin of superimposed river 81 



5. Diagram showing type of unsymmetrical overturned folding 103 



6. Section showing conformable contact of limestone with overlying 



mica-gneiss 105 



7. Generalized section from Merlon to Haverford, Pa 107 



8. Diagram showing pre-Talbot valley 187 



9. Diagram showing advancing Talbot shore-line and ponded stream... 188 



10. Diagram showing later stage in advance of Talbot shore-line 189 



11'. Ideal section showing advance of Talbot shore-line 190 



12. Highest, normal, and lowest monthly mean temperatures at Wood- 



lawn, Cecil County 251 



13. Absolute, Maximum, Average Maximum, Average Minimum and Ab- 



solute Minimum Temperatures at Woodlawn, Cecil County 252 



14. Maximum, Average and Minimum Monthly precipitation, Woodlawn, 



Cecil County 258 



15. Discharge of Octoraro Creek at Rowlandsville during 1897 269 



16. Discharge of Octoraro Creek at Eowlandsville during 1898 270 



17. Discharge of Octoraro Creek at Rowlandsville during 1899 270 



18. Profile of Susquehanna river from its source to Williamsport, Pa. . . . 274 



19. Profile of Susquehanna river from Williamsport, Pa., to Havre de 



Grace 274 



20. Discharge of the Susquehanna river at Harrisburg, Pa., during 1891- 



1898 284 



21. Discharge of the Susquehanna river at Harrisburg, Pa. during 1899 . . 285 



22. Discharge of the Susquehanna river at Harrisburg, Pa. during 1900 . . 285 



23. Cordwood for pulp, Elkton 306 



24. Cordwood for domestic use, Elk Neck 308 



