1916] FORSAITH—ALLOCTHONOUS PEAT 37 
order to form an adequate opinion as to the plan of accumulation 
in a special deposit. The general analysis of Florida peat, together 
with samples from Canada, New Hampshire, and Massachusetts, 
will be reserved for a later paper on the relation of the present 
lacustrine deposits to the formation of coal. The regions chosen 
for investigation were those which presented typical conditions in 
respect to topography and the flora now found upon the shores; 
an estimate of the extent of the several deposits is likewise included 
where such is possible. 
The first deposit examined was at Lake N ewnan, Alachua 
County, which represents a large deep lake with an area of about 
16 sq.m. This entire body of water is surrounded by a sand plain 
bearing a scattered upland flora, which extends to the very shore, 
except at the southern end, where there is more or less of a marshy 
border. Taxodium, Nyssa, Magnolia, etc., grow abundantly on the 
banks, and there is a fringe of species of the Nymphaeaceae, 
Sagittaria, Piaropus (Pontederia) crassipes, and other deep water 
plants which extend several feet into the lake. 
The lacustrine peat deposit was tested in 18 localities (diagram, 
1-18), and samples were taken at one foot intervals which show 
the following characters: Those from the bottom are nearly black 
or deep brown in spite of a large admixture of sand, but there 
appears no coarse organic material except close to the shores, 
where the Piaropus crassipes has become a part of the mass, 
Above this foot of more or less gritty material there occurs a 
rusty brown, uniformly fine substance, becoming less compact 
and lighter in color near the top, and, as usual in such deposits, 
there is a characteristic absence of coarse material, except near 
the shores, where there is an addition of drifted portions of aquatic 
plants 
Some idea of the extent of this organic stratum can be obtained 
from a study of the cross-section (diagram), which was drawn to 
scale from the results of soundings in the center of the lake and 
other localities of varying distances from the shore (diagram, 1-18), 
the results of which can be learned from an application of the 
accompanying scales. Assuming that these tests are representative 
_ for the entire deposit, it is evident that there is a continuous layer 
