150 FLORIDA GEOLOGICAL SURVEY—THIRD ANNUAL REPORT. 
Feet. 
Gray sand and shell, water, shark’s tooth, also minute filack 
phosphatic pebbles .112-133 
Blue clayey marl .I33-I35 
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 penetrating this stratum... .200-219 
Limestone, Vicksburg as indicated by the presence of Num- 
mulites ......219-318 
ROY. 
Roy is located on the Florida East Coast Railway about 6 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. Killings- 
worth for Mr. L, J. Campbell. The well has a total depth of 2qS 
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 Matanzas Bay. An abundance of flowing water is obtained at 
this place. Probably not less than 100 wells occur in and near St. 
Augustine. Of this large number it is possible to mention only a 
few. 
The first considerable flow in and near St. Augustine is ob¬ 
tained at a depth of from 170 to 180 feet after drilling through 
a five to ten foot stratum of dense hard rock. The material pene¬ 
trated before reaching this hard rock stratum consists largely of 
sand near the surface, followed by blue clays with some shell and 
occasional thin layers of rock. A shell stratum often described 
as “coquina” occurs at a depth of about 60 feet. 
The material below 'the depth of about 180 feet consists of al¬ 
ternating hard and sof't strata largely limestones with probably 
occasional flints. The flow of water increases as the limestone is 
penetrated. The chief large increase of flow occurs at a depth of 
about 520 feet and most of the wells at St. Augustine terminate 
?t this depth. 
Water for the city of St. Augustine is obtained from two ar¬ 
tesian wells located about one mile north of the city. Well No. 1 
was drilled in 1897 by Mr. Hugh Partridge and had originally 
a depth of 371 feet. About 1903 this well was deepened to a to- 
