GEOGKAIMIY AND NEGKTATlO.X OF NORTH I:RX FLORIDA. l8l 



tion about that particular region can be obtained. For the sake of 

 brevity these references do not gi\e the complete citations, but only 

 the author's name, the number of his paper (as given in the bibliog- 

 raphy), and the page numbers if any particular pages can be desig- 

 nated as bearing on the region under consideration.* In most cases 

 there are also references to illustrations which have been published 

 in previous annual reports of this Survey. 



Licoioc/y ami soils. The geology of the whole state and \arious 

 parts thereof has been discussed in several easily accessible state and 

 government publications, some of which are referred to herein. 

 Consequently little more needs to be said about the geologv here, 

 except in a few cases where previous accounts seem to be inade- 

 quate. (It might be remarked in passing that geological in\estiga- 

 tion in Florida, as in many other parts of the coastal plain, is at- 

 tended with peculiar difficulties, owing largely to the prevailing 

 blanket of sand, and our knowledge of some of the problems is still 

 far from satisfactory.) ^lineral resources and underground waters 

 are here referred to onlv incidentally, for they have been discussed 

 at considerable length in previous publications of the State Geologi- 

 cal Survey. 



Soils are desc'ribed only in a superficial way. Detailed descrip- 

 tions of the soils of some of the counties, withotit chemical analyses, 

 are included in the reports of the U. S. Bureau of Soils for about 

 ten years past. (See bibliography for list of areas surveyed by that 

 Bureau in northern Florida). Some mechanical (i. e. physical) 

 analyses of soils ha\'e been copied from these government reports. 



Very few chemical analyses for northern Florida are a^•ailable, 

 unfortunately, but four or five essentially complete ones have been 

 taken from the sixth volume of the Tenth Census (Smith 2 in 

 l>ibliography), and several showing the amounts of certain essential 

 elements have recently been made for us in the laboratorv of the 

 State Chemist. 



Under the head of soils are included some desultory notes .on 

 the soil fauna, or subterranean animals, which have a very import- 

 ant influence on soils and therefore on vegetation. As in most 

 other parts of the country, ants are found nearly everywhere ex- 

 cept in the wettest places. Earthworms, which are perhaps the most 



*Some of the older books cited in the bibliography have been seen only 

 in New York librarie,s. and cannot be referred to bj' page at this time. 



