432 356 
It is now my pleasant duty to express my hearty thanks to 
each of the gentlemen above mentioned, for their obliging readiness 
in undertaking the work, as well as for the care with which they 
have carried it out. 
The ten parts of which the ‘Flora of Koh Chang” consists, 
includes in all 1513 plants determined as to species, of which 194 
were new to science. These species may be systematically divided 
as follows: 
Phanerogams 521 of which 57 new; pteridophyta 72, of which 
6 new; mosses (Bryales and Hepatice) 61, of which 23 new; algee 
669, of which 38 new; lichens 95, of which 39 new, and fungi 95, 
of which 31 new. j 
In addition, a number of species are noted under the different 
genera as not identified with certainty. 
The material having been distributed among numerous special- 
ists, the work upon the different sections naturally could not 
progress at a uniform rate, in consequence of which it was 
impossible to let the various groups appear in systematic order, 
and again, I have not always succeeded in placing all the species 
belonging to one family in the same part of the publication. To 
the present Part X is therefore appended an index, drawn up by 
Carl Christensen, M. Sc., which will, it is hoped, in some degree 
obviate the difficulties thus arising. 
Especial thanks are due to my friend Dr. C. H. Ostenfeld, 
Inspector of the University Botanical Museum at Copenhagen, for 
the valuable assistance which he has afforded me in the placing 
and treatment of the material. 
Finally, I beg to thank the Danish Botanical Society for accord- 
ing space to the “Flora of Koh Chang” in their Journal, and also 
the Carlsberg Fund, who have, besides granting me financial support 
towards my stay in Siam 15 years ago, and during the subsequent 
treatment of the material, also borne the printing expenses. 
Carlsberg Laboratory, Copenhagen, 
December 14, 1915. 
Johs. Schmidt. 
