INTRODUCTION. 



The following bibliography was prepared by Miss Cockrill, first as a card 

 catalogue and cross reference index for the use of the Survey, and then for 

 publication for general use. 



As is readily seen, a large amount of geologic work has already been done 

 in Tennessee. While many of these reports and papers are out of print or 

 can be obtained only with difficulty, on the other hand, many of them can 

 be obtained for the asking or at a relatively small cost. 



It is the purpose of the present State Survey to prepare a series of bul- 

 letins summarizing all that is now known of the different mineral resources, 

 and the different counties, and in many cases, these summaries will cover 

 all of the facts presented in the earlier reports, and to that extent will, for 

 practical purposes, entirely superseded those reports; but no attempt to du- 

 plicate the detailed earlier reports will be made until such time as the Sur- 

 vey's, own detailed work shall have covered that area, resource or problem. 



For example, the Columbia folio by the U. S. Geological Survey is a beau- 

 tiful piece of work and mapping, describing the phosphate rocks occurring 

 in that region, the rocks in which the phosphates occur, their probable 

 origin, their general distribution, their general chemical character, but no 

 details are given. In the progress of its detailed study of the phosphate 

 rocks, the State Survey will ultimately hope to publish, not only detailed 

 maps of the phosphate deposits, but detailed descriptions of all the deposits, 

 giving, as far as possible, detailed sections, description of extent, analyses, 

 etc. But meanwhile many people may want to refer to the Columbia folio 

 if they know of its existence. So, too, the Columbia folio describes some 

 interesting embayment deposits. Ultimately the State Survey hopes to trace 

 those deposits to their natural limits, but it may be some years before that 

 can be done, and in the meanwhile many people would be interested in the 

 facts brought out even in as limited an area as that covered by the Col- 

 umbia, folio. 



Therefore, it has been felt that it would be a distinct service to publish 

 a list of the reports and papers that have been written on the geology, soils, 

 drainage and forestry of Tennessee. The bibliography makes no pretense 

 to being complete, especially in the cross indexing (as many of the earlier 

 papers, especially, are not contained in the State Geologist's private library, 

 which, for the time being, must serve the needs of the new Survey). 



But it was felt it would be of more value to bring the list out without 

 delay, rather than to wait the several years that are usually necessary to 

 search out the few additional titles to make it complete. 



In preparing the bibliography, Miss Cockrill has made use of the various 

 bibliographies on geology issued by the U. S. Geological Survey, and has 

 supplemented that by lists kindly furnished by the several bureaus of the 

 Agricultural Department, Coast and Geodetic Survey, etc., and by such 

 other titles as could be learned of from the people in the State. In this 

 work she has received a large amount of assistance from Professor Glenn, 



