360 REVIEW. 
system. In nomenclature the Vienna Code is followed rather 
closely, but, as to accepted specific names, not invariably. No 
attempt seems to have been made critically to study the various 
cases of synonymy, and few new combinations are made. A 
strict interpretation of the Vienna Code would necessitate the 
acceptance of different specific names in an appreciable percent- 
age of cases. Very few new forms are described. 
The work is unequal in its treatment of various groups. In 
some cases the species are simply enumerated under their proper 
genera in the form of analytical keys, while in others more 
critical enumerations are included, with literature references, 
r 
synonyms, native names, and other data. Where recent mono- 
graphs were available these have been followed closely as to the 
Javan forms. In most families, however, no recent monographs 
are available, and the data given under these of necessity have 
been compiled by the author. However, he has had the assist- 
ance of many eminent European specialists in working up the 
material in various families. Special attention is given to the 
mountain flora throughout the work. 
The "Exkursionsflora von Java" should prove to be of the 
very greatest value to residents of Java who are at all interested 
in the rich vegetation of that island, but it has a much wider 
application. It will, in fact, prove to be of great assistance to 
students of the entire Malayan-Polynesian flora, in the vast area 
extending from the Malay Peninsula to Polynesia and including 
the Philippines. As to the Philippines practically every family 
found in the Archipelago should be determinable by the use of the 
analytical key given by Doctor Koorders, as well as approximately 
90 per cent of the genera found in the Islands. As to species, 
with an endemic element in the Philippines averaging about 40 
per cent, comparatively few of our forms can be determined to the 
species, by this work, excepting in the case of the low country 
flora. In the settled areas the great majority of the species are 
of very wide distribution, and of these at least 50 per cent should 
be determinable by the keys given by Doctor Koorders. Ap- 
proximately the same figures will apply to the Malay Peninsula 
and to most of the islands in the Malay Archipelago. 
Including introduced and cultivated forms, a total of about 
4,930 species are considered, distributed into about 1,560 genera, 
in 194 families, which gives botanists additional definite data 
for comparisons of temperate and tropical floras of restricted 
areas. In this connection it is of interest to note that in the 
