THE ‘BIOGRAPHICAL INDEX OF BRITISH BOTANISTS” 231 
was recognised that the Congress —— not attempt to pass laws 
or rules, but merely recom nen See tions supported by reason 
annotations. It became ayia t, however, that a general agree- 
ment on the recommendations as a whole was not likely to be 
reached, and the reporters therefore decided to put before the 
Congress only those recommendations upon which there —— 
to be ena: paren tant The substance. of these was 
follow 
(1 ) That ht author should explain exactly what he under- 
stands by the 
(2) That the cote names of the units of vegetation in the 
various qenemaees should be retained. 
(3) That the principle of priority in phytogeographical termi- 
nology is as stacey missible. 
@ ) That a polyglot synonymie dictionary of phytogeographical 
terminology, with bibliographical references, should be compiled by 
commission. 
"X6) That the colour scheme suggested by Prof. Engler for 
maps of tropical vegetation be recommended for adoption. 
That ecological phytogeography may be defin ed as the 
study of the relationships of plants and plant-communities with 
their environment. 
ese recommendations were carried nem. con. As regards 
the somewhat contentious question as to the meaning and defini- 
oe of fe two terms plant-association and plant-formation —— 
have come into use to designate the most important units o 
saikiaiion Prof. Flahault stated that there appeared to be ene 
agreement in considering the association as a unit of definite 
floristic composition and the formation as something different 
from the association 
Though it has not resulted in the establishment of a uniform 
ab 
pomied eS pon mis dictio: will be invaluable. 
indebted to Nature of June 30 for a portion of the 
selecseton given oes 
THE “ BIOGRAPHICAL INDEX or BRITISH BOTANISTS.” 
In accordance with an intimation given in these pages som 
time back, a new edition of this Index, to the usefulness of whisk 
ample testimony has been borne, is in active preparation. It will 
communicate to the compilers any details which are not found in 
the work or in its Supplements. We have already received infor- 
