THE ARTESIAN WATER SUPPLY OF EASTERN FLORIDA. 17

below a hard rock upon which the casing was landed. The following is a log of this well as given by Mr. Melton:
Feet.
Dark sandy soil.................... .......... ........ o- 6
White marl ............................................. 6- 15
Sand -and shell........................................... 15- 30
Blue clay ............................................... 30- 65
Sand and shell............................................ 65- 87
Limestone, medium hard. First flow at 88 feet, increase of water
with depth............................................ 87-IX)

Scale of Miles
0- 8

Fig. 16.-Map showing the areas of artesian flowI in Volusia County.. The areas in which flowing wells can be obtained are indicated by shading.

176