1917] GANO & MCNEILL—EVAPORATION RECORDS 327 
The flatwoods station, on Leon Sand, gave an average for 18 
months (with a break in the record for December and January . 
1912-1913) of 12.99 cc. per day. The January to April average 
for 1913 is not complete, but for the summer and winter periods the 
averages are, in order, 13.24 cc. and 11.17 cc. The minimum 
month is January, 5.94 cc. per day; the maximum in May is 
19.8 cc. per day. The actual minimum falls lower than that of 
any othér, being 3.88 cc. in February, and the maximum was 
25.44 cc. in May. 
The meadow stations were not in operation for a long enough 
time to give results covering a year. From October to June the 
willows averaged 12.47 cc. daily, comparable to the flatwoods 
station. The average for the birch station for the time was 13.98 
cc. daily. Their minima occurred in January and maxima in May. 
Arranging the stations in the order of their yearly averages of 
evaporation, beginning with that having least evaporation, their 
order is as follows: hammock climax forest, willow (meadow) zone, 
flatwoods, birch (meadow) zone, Spanish oak-post oak forest, 
short-leaved pine forest, scrub oak forest, beech wood (open and 
grazed), long-leaved pine forest. Omitting the meadow stations, 
the others arranged in order of increasing rates are (for the summer 
period June to November), after the hammock forest, the Spanish 
oak-post oak forest, the flatwoods, the beech (grazed), the short- 
leaved pines, the scrub oaks, and long-leaved pines. The order, 
by winter average rates, is flatwoods, short-leaved pines, scrub 
oaks, Spanish oak-post oak, beech (grazed), and long-leaved pines. 
The order during the critical period of the year, from January to 
May (a dry period and a time of sharply rising temperature, cor- 
responding to the time of vernation of the deciduous trees and o 
changes of leaves, in part or altogether, of many evergreens), is as 
follows: mesophytic hammock forest, Spanish oak-post oak forest, 
beech wood (grazed), short-leaved pine wood, long-leaved pine 
wood, and scrub oaks. Of these the order of the forests on the 
clayey soils of the upland is essentially that observed for their 
succession, the difference in winter being in the place of the leafless 
Spanish oak-post oak forest as compared with the conifer forest. 
In the pine and oak forests on the dry sandy soils, the same relation 
