Dumble and Harris — Galveston Deep Well. 39 



— that of revolving and jetting by Chapman Bros., Aurora, 

 Illinois — is fully described by Mr. Byrnes, the contractor, in 

 the Engineering News, August 11th, 1892. 

 The piping of the finished well is as follows : 



loin. 868 feet.. 868 feet. 



12 in 629 feet 1499 feet. 



9 in 866 feet 2363 feet. 



8 in 75 feet . _ 2438 feet. 



Tin 162 feet _.. 2600 feet. 



5 in. 470 feet 3070 feet. 



Many hundreds of samples were taken at the mouth of the 

 well throughout the work and those necessary to show the 

 character and variations of the several beds that were pene- 

 trated together with all the fossils collected were carefully 

 preserved and are now in the collections of the Geological 

 Survey of Texas. 



Mr. Singley's section, made after a critical study of the 

 specimens taken by him from the well, differs a little from the 

 log of the well-borers as given by Mr. Byrnes in the article 

 referred to and by Prof. Hill in this Journal for November, 

 1892.* Therefore, although a part of it has already been pub- 

 lished, f the entire section is given in a condensed form. 



Xos. T'kn's. D'pth 



1. Bivffy gray sand 46- 46 



2- 3. Clay brown and mottled, calcareous concre- 

 tions, etc 54- 100 



4- 5. Sandy clay underlaid by fine gray sand 67- 167 



6-10. Alternations of clays and sands containing shells 



and fragments of lignite . 291- 458 



11-15. Clayey sands and sandy clays with some mica. 154- 612 



16-18. Sandy clays with shell fragments 94- 706 



19-21. Sand and clayey sand 121- 827 



22. Coarse silvery-gray sand — waterbearing 55- 882 



23-25. Sandy clay with lignite and few shells. 29- 911 



26. Indurated coarse gray quartz sand 3- 914 



2 7-28. Sand and clayey sand, micaceous _ 118-1032 



29. Sandy clay --.. 228-1260 



30. Coarse gray quartz sand — water bearing .... 28-1288 

 31-32. Clay and sandy clay 42-1330 



33. Coarse gray quartz sand — water bearing 10-1340 



34-36. Clays. 44-1384 



3 7. Coarse gray sand 9-1393 



38-40. Sandy clays, variously colored 55-1448 



41-43. Sand* sandy clay and clay ._ 45-1493 



* The deep Artesian Boring at Galveston. Texas, p. 426. 



f Geological Survey of Texas, Secorjd Report of Progress, Artesian Water by 

 J. A. Singley. p. 78. 



