He succeeded i 
through the press when he in turn was obliged t< 
task owing to his leaving for Cape Colony in VMY.) to take up his 
duties as Professor of Botany in the South African College. 
Failing other assistance, 1 found it impossible to carry it to 
completion till I had myself been relieved of administrative 
"It appears to me that it is of considerable interest to show what 
a vast number of forms of life of the most varied kind may exist 
together on what is relatively a microscopic speck of the earth's 
surface. This would be in the present case even more striking if 
the enumeration were inure complete than it can pretend to be. 
Some -roups have not been worked at all : this is the r<>*' with 
the /)t/)fcra, and of the Hemiplem only the Con-it/d' have been 
catalogued.^ Others, it is obvious, have been only touched super- 
ticially. The publication of what has been done may encourage 
working naturalist* to correct errors and to accomplish^ as perhaps 
has never been done yet, a complete census of every form of life 
occurring spontaneously in a small but well defined area. 
" I am glad to take the opportunity of acknowledging gratefully 
the assistance which has been given to those who have suc- 
cessively had a hand in the work bv a very large number of 
individual workers in various branches of zoology and botany, 
borne of the most important are enumerated in the following 
table of Contents.' I see from the mass of correspondence 
which has accumulated that there are a host of others, inanv 
personally unknown to me, who have cheerfully rendered the 
,^ "' " " " !>a> be< b mai d< I 1 tin m on special points. 
1 im ". u I'ui'raci.cahk. to specify them all individually, and can 
only beg them collectively to accept my appreciation of' their aid. 
" W. T. Thiselton-Dybr. 
" The abbreviations used are as follows • 
" A - *»* ™ r v^ he who,e ° £ ^ *» ™>- 
" B ' B "he ni Xet? m This division was formerly separated from 
Jate bToS^H Y" re , fenCe ' which ra » ™™ Unicorn 
^ree^to^ae" tvr daT ' 8ta ' al0ngeaStem M " ° f » h 
" P. Palace and herbarium grounds. 
" Q. Queen's Cottage grounds. 
" R. Rock-garden. 
s. e X tend : 
i:^,i:t^^'' ,h " wa " »«•' ih - 
. v,. herb; 
> < ottage -rounds." 
