217 
Boreal species, 93, Southern species, 94. 
Statistics 94-95, Characteristic species, 95-96.. 
Maritime vegetation, 96—99. 
Beaches, 96, Dunes, 96, Marshes, 97, Edges of marshes, 98, Moist dune 
hollows, 98. 
Statistics, stis 
Weeds, 9 
Origin тей MT EE of coastal plain flora, 102-112. 
Systematic catalogue, 113-779. 
Method of treatment, 115-117. 
Pteridophytes, 119-145. 
List mt pee un LA: 6. 
Summary talogue, 806. 
Glossary, iuro 9. 
Index, 813-828. 
Plates (I-CX XIX). 
Perhaps the most noteworthy feature of the work, next to 
the profusion of original observations, is the emphasis laid 
throughout on natural geographical divisions based on soil and 
vegetation. The author here discards, though apparently not 
without some reluctance, the parallel transcontinental ''life- 
zones "of his fellow zoólogists, and will perhaps be regarded by 
some of them as a heretic for daring to mention such a sharply 
defined and non-climatic geographical province as the coastal 
plain (whose significance was scarcely recognized by botanists up 
to about fifteen years ago, or by Stone himself until much more 
recently). As a partial justification of this seeming heresy he 
explains (pp. 42, 43) that perhaps the fall-line (the inland bound- 
ary of the coastal plain) has more effect on plants than it has ` 
on animals. (See also page 102.) 
On page 42 the author expresses the opinion that because in 
the southern states 'a great many coastal plain plants range 
far west of the fall-line," that line “is less potent southward.” 
This conclusion is not well founded, though, for in Georgia for 
example there are scores if not hundreds of species of plants 
confined to the coastal plain which do not reach New Jersey at 
all; and the change in vegetation at the fall-line is just as notice- 
