8 ILLUSTRATIONS. 
"Page. • 
Fig. 22. Section at Cubach, Nassau, Prussia, after D. C. Davies 47 
23. Section at Staff el, Nassau, Prussia, after D. C. Davies 47 
24. Section from Truxillo to Logrosan, Spain, after Daubeny and Wid- 
drington 54 
25. Ground plan of the Caceres mines in 1875, after C. U. Shepard, jr 56 
26. The Estrella deposit iu Estremadura, Spain, after C. U. Shepard, jr.. 57 
27. Section ENE. ancl WSW. through Pinckney's phosphate field, South 
Carolina 64 
28. Average section in Piuckney's phosphate mine, Berkeley County, S. C. 64 
29. Section in oue of Fishburne's pits, South Carolina 65 
30. Strata overlying the phosphate bed at Castle Hayne, New Hanover 
County, N.' C 73 
31. Section in quarry at Rocky Hill, on Lochloosa Creek, near Magnesia 
Springs, Alachua County, Fla 79 
32. Section of strata at Cwmgwynen phosphate mine, southwest of Llan- 
gynog, North Wales, after D. C. Davies 80 
33. Section of strata at Berwyn phosphate mine, west of Llangynog, North 
Wales, after D. C. Davies 81 
34. Distorted bed in Cambridgeshire, England, after O. Fisher 90 
35. Section at Upware, Cambridgeshire, England, after W. Keeping 90 
36. Section at Sandy, Bedfordshire, England, after J. F. Walker 91 
(482) 
