FREE INSTITUTE OF SCIENCE 
VEGETATION OF SOUTH FLORIDA * 
ELEVATIONS SOUTHEASTERLY FROM FORT MYERS TO BROWN 'S STORE 
FEET 
De eee, de ee 0.0 
eee eee, уа NI M 19.9 
Ml )) A eke da SIS 27.7 
General sintacey ene, a A 30.7 
ar ) A o cue A рр; 25.0 
СЕ KUCE, A Шул лл Te оме 37-7 
УОК шас dake a 8 20.0 
ahh ЕО ТЕО е a Да ЛГ qe pae acer 22.0 
Genera © miles east or Тоо, о 28.0 
Water surface op Olbdlostoodhes Slows VO C ote 8 25.3 
Suriace-of land , /// OREL ка 27.0 
Тасе DONT MOCE ШАКЕ ds ñr ß ññß? о у, 24.0 
Water subince Or nee / “ 21.0 
Surface, 8 miles Moutheasterly from Rock Lake 21.0 
SUNAO, 4 Miles Welt Of BfGWI d... л... 17.7 
, CT IRAN EN DER CERA 17.0 
Extreme high-water mark of Everglades at Brown's store.................... 16.3 
CONSI ВОИС OL UCR Ut DIO WD ESOO... cosa cia ao va es 14.6 
ELEVATIONS ACROSS THE EVERGLADES EAST FROM BROWN'S STORE 
Surkaes of muck, s milas ennt ОГ ВСТО О ОО, ribi aes ᷑ A 14.0 
Surface Of fuos, do ИШ , ß T, 13.0 
Surface of rocl, e / 8.0 
5шисе OL MUCK, , ) ............................ 12.6 
SUTIACE Or ОСИ, YO ), (,, ¼ . ᷣͤ odo ри 8.0 
Surface A oi Brow o ] TTT 11.6 
SUNACO OL COCE, een tore 10.0 
/// опал 18.7 
%%% aa A 8 12.3 
eee ,, A cn 11.0 
Low tide dt Port Lauderdale (one observation.. н. 6 
Origin of Everglades.—The Everglades lie in what has been called a rock- 
rimmed basin, and a vast sink, but these expressions are probably inexact. 
It is true that bed rock lies at or near the surface toward the edges of the 
Everglades. Along the east side, from Jupiter River to Hillsboro River, the 
outcrops are few. South of New River they are more numerous, and from 
just north of Miami to Homestead, the rock forms bare areas with a maxi- 
mum elevation of 4.5 meters (15 feet) above mean water level in the Ever- 
glades. This series of ridges bends at the southern end of the peninsula to the 
west forming the series of rocky Everglade keys, reaching nearly to White 
Water Bay. South of the limestone region from Cutler on Bay Biscayne 
around the southern end of the mainland past Cape Sable, White Water Bay, 
Ponce de Leon Bay and the Ten Thousand Islands, there are no outcrops of 
bedrock above sea level. On the southwestern side of the Everglades, rock 
