68 
os 
“ Berlin W. , Kurftirstenstrasse, ili, 
“ January 2%), 1889. 
“ MY DEAR Mr. THISELTON-DYER, 
“Tt has been a very pleasant surprise to me, this ee 
to receive from you the ‘Index Flore Sinensis.’ I thank 
sincerely for this kind token of remembrance 
“Tt is of great value to have a a Flora of China embodying 
all the species known from that country. You have sede 
me time, in looking o the localities mentioned in the book, 
it strikes me that large "portion s of China are still unexplored 
botanically, There remains a splendid tield for a good collector 
in the Tsinking larry the province of Sz’ iar ging and chie 
its. elevated regions west of Chéng-tu-fu. ork in those parts 
will be greatly facilitated ed the solid foundation laid through the 
work of Forbes and Hemsley. 
“Yours very truly, 
“ (Signed) F, RICHTHOFEN. 
“ From the circumstances of the case the enumeration of the 
species, of which we now possess material or know of the 
existence in echo herbaria, is admittedly unequal. The number 
of those for instance contained in Part I, sould probably from 
present knowledge have to be mein by a third. This has 
been as far as possible remedied by the list drawn up by 
Miss M. Smith of the new species published during the progress 
of the work and of ¢hiode a described whose area has since 
been found to extend to Chi 
“The usefulness of the a work has been énomniotaee 
nonaatin by “pe complete index of all names eon including 
ontains some 17,000 entries, and is due to the 
indefatigale in indy of Mr. Daydon Jackson, tiie Society’s 
eral Secre 
“No useful eile would be served by an attempt to specify 
all those who have supplied the material which has been used in 
. ried of European Botanical Discoveries in China,” published 
in 1 
“A few exceptions must, however, be made. Dr. Hance who, 
to use the words of Bretechneider ‘has connected his name for 
f * 
noticed, after the appearance of the first part. His Herbarium 
of Asiatic plants a upwards of 22,000 species was acquired 
by the British Museum 
“ Dr. Henry’s derubehint mera titi ae already noticed, 
i available for the first part and only to a small extent for the 
ond, From that point they cate sani aedils drawn upon as 
sy successively reached this country. 
