WATER SUPPLY OE EASTERN AND SOUTHERN EEORIDA. 193 
R. C. Walker. This limestone was penetrated for nearly 100 feet, 
the total depth of the well being 318 feet. The following is a 
log of this well, constructed from the notes and the samples sent 
in by Mr. Walker: 
Feet. 
Surface sand, yellow in color. Soft water . 0- 18 
Light gray sands . 18- 30 
Dark gray sands, partly indurated; some clay. 30- 44 
Shell, sand and gravel . 44- 55 
Very dark (almost black) marl, similar in appearance 
to Miocene marls, including shell fragments .. 55- 63 
Light greenish sandy marl . 63- 80 
Dark green marl, small shark’s tooth observed. 80-100 
Gray sand and shell fragments; water .lOO-l^ 
Gray sand and shell, water, shark’s tooth, also minute 
black phosphatic pebbles .112-133. 
Blue clayey marl .133-135. 
No sample .'..135-153 
Blue marl with inclusions of black phosphatic pebbles . ...153-174 
Blue clayey limestone; water-bearing ...174-175. 
Dark green marl with some black phosphatic pebbles .175-200 
Very hard bluish colored rock, and water-worn small 
pebbles; water commenced to flow upon pene¬ 
trating this stratum . 200-219 
Limestone, Vicksburg as indicated by the presence of 
Nummulites.219-318 
ROY. 
Roy is located on the Florida East 'Coast Railway, about six 
miles inland from the St. Johns River. One deep well is reported 
from this place. This is a four-inch well drilled by Mr. S. I. 
Killingsworth for Mr. L. J. Campbell. The well has a total depth 
of 298 feet and is cased 150 feet. The flow is reported to rise 
four feet above the surface. 
ST. AUGUSTINE. 
St. Augustine, the county seat of St. Johns County, is located 
on Matarizas Bay. An abundance of flowing water is obtained 
at this place. Probably not less than 100 wells occur in and near 
