vi PREFACE, 
the former in reading the proofs, and the latter in working out 
the geographical distribution. 
Besides the maps already cited in the preface to Volume 
VL, the following have also been used :— 
Natal. By Alexander Mair, 1875. 
Kaffraria und die dstlichen Grenz-Distrikte die Cap- 
Kolonie. By H. C. Schunke in Dr. A. Petermann’s Mit- 
teilungen, 1885, t. 9. 
Spezial-Karte von Afrika. Gotha: Justus Perthes, 1893. 
To the South African correspondents enumerated in the 
preface to Volume VI., I have again to tender my acknow- 
ledgments for the cunieibale of specimens. ‘ 
I must further record my obligations to others, and espe- 
cially to those whose aid in various ways has been of the 
greatest value in the preparation of the volume :— 
Dr. WitneLm Brenner, of Liibeck, has lent the study set of 
Drége’s Restiacex and Graminex, without which it would have 
been impossible to arrive at a correct knowledge of some of 
the species, 
Dr. A. Fischer von Wa.puzim, Director of the Imperial 
Botanic Gardens, St. Petersburg, has lent the specimens of 
Danthonia and Pentaschistis collected by Ecklon and Zeyher. 
Dr. THEopor Maenus Frizs, Professor of Botany in the 
University of Upsala, has lent Thunberg’s collection of grasses, 
which have afforded valuable help in the correct identifica- 
tion of some of the species of the earlier authors. 
Leo Hartitey Grinpon, Esq., has contributed a small 
collection from the Orange Free State. 
Professor Epuarp Hacket, of St. Polten, Austria, has kindly 
lent some type-specimens of grasses. 
Major Wo.ey Dop, R.A., has contributed a very large 
collection of plants made by himself in the Cape Peninsula, 
which is unexpectedly rich in new species. 
It only remains again to add that the expense of prepara- 
tion and publication of the present volume has been aided by 
grants from the Governments of Cape Colony and Natal. 
Witt 
Kew, March, 1900. 
