GEOGRAPHY AND VEGETATION OF NORTHERN FLORIDA. 397 



ADDITIONAL INFORMATION ABOUT SOILS. 



In the regional descriptions a number of mechanical analyses of soils have 

 been quoted from government soil surveys; but in those published since 1905 the 

 localities and depths of the samples are not given. Some of the missing data 

 have just been obtained from the records of the U. S. Bureau of Soils through 

 the kindness of Prof. C. F. Marbut, in charge of the soil survey work, and are 

 given here, having been received too late for insertion in the proper places. 



Region i, p. 194. The sample of "Norfolk fine sandy loam" came from 3 

 miles north of Aycock, and should therefore have been given under region 2, on 

 page 202. 



Region 6, page 225. Both samples of "Norfolk sand" are from localities 

 outside of the lake region ; but perhaps there is no essential difference between 

 them and the lake region soils, in texture at least. 



Region 9, page 248. The ' Leon sand" is from one mile north of Grand Bay, 

 which would be about in S. 24, T. i S., R. 4 W. The depths of soil and subsoil 

 are 0-8 and 8-36 inches respectively. 



Region 10, page 255. The samples of "Norfolk sand" from Jefferson 

 County are from % mile south of Ashville and 2 m.iles south of Lloyd's. 



Region m, page 268. It turns out that neither sample of "Norfolk sand" 

 from Leon County was from the Tallahassee red hills, so that its omission from 

 the table was justified. 



Region 16, page 310, The "Portsmouth fine sand" samples from Jefferson 

 County were taken 2 miles north of Delph (now called Fanlew), >vhich would 

 probably be in S. 20, T. 2 S., R. 3 E. The depths are 0-8, 8-20, and 20-36 

 inches. 



Six additional chemical analyses of soils have been made by L. Heimburger, 

 Assistant State Chemist, since the printing of the foregoing pages was well ad- 

 vanced. As in the case of those given on pages 270 and 281, he used the A. O. 

 A. C. methods for fertilizers, described in Bulletin 107 of the Bureau of Chem- 

 istry, U. S. Dept. of Agriculture, revised edition of 1912. To be more specific, 

 the phosphoric acid was determined by method 3(a) (2) (a2) on page 2, the 

 nitrogen by method 4(d) (modified Gunning method) on page 8, and the potash 

 by method 5 (a) (2) (b) on page ^i. The sodium, sulphur, magnesium, man- 

 ganese, and several other minor or less important constituents were not deter- 

 mined for lack of time. The volatile matter includes nitrogen. 



The samples are as follows : 



1. (Region 2, page 201.) Pine land on east side of Choctawhatchee River, 

 8y2 miles northeast of Cerro Gordo, Holmes Co. Collected by Dr. E. H. Sel- 

 lards. 



2. (Region 9, page 247.) Flatwoods near 32-mile-post on G., F. & A. Ry. 

 (betvsTeen Hilliardville and Arran), Wakulla Co. Oct. 8, 1914. A rather coarse 

 gray sand, o-i ft. Vegetation long-leaf pine, saw-palmetto, gallberry, wire-grass, 

 deer-tongue, and several less familiar plants. (This would probably be classed 

 as "Leon sand'' by the U. S. Bureau of Soils.) 



3. (Region 13, page 289.) Coarse yellowish sandy loam from rich woods 

 about a mile north of Crawfordville, Wakulla Co. (The same spot shown in 

 fig. 77.) Oct. 8, 19T4. Vegetation mostly red oak, hickory and dogwood, with 

 very little underbrush or herbaceous vegetation. Sample taken to a depth of 

 one foot. 



4. Same locality, 2 to 3 feet below surface. Subsoil, very similar in ap- 

 pearance to surface soil. (See mechanical analysis on page 289.) 



