396 FLORIDA GEOLOGICAL SURVEY-THIRD ANNUAL REPORT.
PAGE
U.
Underground water, circulation of ...................................... 102
depth of .......................................... 103
general discussion ................................. 99-107
hydrogen sulphide in .............................. 104
source of ......................................... 99
Union Brick Co., section in pit of ...................................... 154
Union Phosphate Co., exposure in pits of .............................. :27
U. S. Engineer's Office, information from ...................... 136, 141,153,364
experiments with water hyacinths ..................... 292
U. S. Geological Survey, co-operation with ...............II, 85, 199,207,298,303
J7.
V alkaria, well at .................................................... 192
VanDorn, H., assistance from .......................................... 85
log of w ell by .............................................. 176
wells drilled by .............. ........................... 174, 176
VanHise, C. R., treatise on metamorphism .............................. 53, 105
Vertebrate remains in phosphate formations ............................ 23, 34
V ertigo ....................................... ...................... 28o
Vicksburg group in eastern Florida, description of...................86- 88
Vicksburg limestones, irregularity of top surface of ..................... 24, 28
relation of phosphate-bearing formation to......... 24 Vignoles, C., observations upon the Floridas ............................ 365
Vivipara ................. .......................................28o
Volusia County, area of artesian flow in ............................... 174
location and surface features of ........................ 173
m ap of ............................................... 175
water-bearing formations of.................. 1 .........174
W.
Wacissa River, peat deposits of ...................................... 240
W ade, 0. H., well drilled by ........................................... '157
Wade & Hampton, well drilled by ...................................... 131
W aldo, M. A., fossils donated by ........................................ 34
Walker, Bryant, shells identified by. .............................207, 280
W alker, H., logs of wells by ........................................... 132, 147
wells drilled by ................................ 131, 141, 147, 151,181
W alker, R. C., log of well by .......................................... 149
w ell drilled by .......................................... 149
W alkill, well at ....................................................... i16o
W alton Co., elevations in .............................................. 219
Warrants issued, list of..................................... ........ 14
"Water hyacinth peat....................................... 292-293, 302, 342
Waterfalls in Middle Florida hammock belt ............................ 220
Waters, C. F.. on peat bog of Maryland. .............................. 362
Watson, A. M., well of ........................................... 18
Webb, Dr. DeWitt, assistance from ................................ 8