CONTENTS— Continued 



Chapter Page 



6. Miscellaneous Subsurface Methods — Continued 



Magnetic Core Orientation by M. G. Frey 596 



Coring Techniques and Applications by H. L. Landua 609 



Application of Dipmeter Surveys by E. F. Stratton and 



R. G. Hamilton 625 



Design and Application of Rock Bits by L. L. Payne 643 



Deep-Well Camera by O. E. Barstow and C. M. Bryant 664 



The Electric Pilot in Selective Acidizing, Permeability 



Determinations, and Water Locating by P. N. Hardin 676 



The Porosity and Permeability of Clastic Sediments and 



Rocks by George H. Fancher 685 



Drilling Fluid Chemistry by H. F. Sutter 713 



Hydrafrac Treatment by W. E. Hassebroek 723 



Formation Testing by W. A. Wallace 731 



Oil-Well Cementing by W. D. Owsley 746 



Well Acidization by L. W. LeRoy 750 



Geochemical Methods by R. Maurice Tripp 760 



7. Secondary Recovery of Petroleum by Paul D. Torrey 775 



8. Valuation and Subsurface Geology by John D. Todd 792 



9. Duties and Reports of the Subsurface Geologist 



by George W\ Johnson 810 



10. Graphic Representations by L. W. LeRoy 856 



11. Subsurface Maps and Illustrations by Julian W. Low 894 



12. Subsurface Methods as Applied in Mining Geology 



by Truman H. Kuhn 969 



13. Subsurface and Office Representation in Mining Geology 



by Sigurd Kermit Herness 989 



14. Subsurface Methods as Applied in Geophysics 



by Harrison E. Stommel .!..1038 



15. Geologic Techniques in Civil Engineering by George L. Robb 1120 



16. Sources of Well Information 1150 



