'2o(] Report 8.A.A. Advancement of Science. 



Census. 



A census of the recoided number of Families, Genera, Species, and 

 named Varieties (no variety being considered as such unless the type 

 or another variety is also in the colony) gives the following figures : — 



Total 154 864 2882 180 



Medley Wood's Natal List, presentetl to this Association in 1905 

 and recently brought up to date and published, gives (adding the 

 Transvaal numbers f(jr the Asclepiads to make comparison as fair as 



possible) : — 



Families. Genera. Species. Varieties. 

 132 875 3308 83 



+ 32 +143 +5 



132 907 3451 88 



This shows a ditference of 20 fewer Families, 40 more Genera, 

 some 600 more Species and 100 fewer named Varieties. Of the 

 Families, 13 are accounted for by the Filices and Conifera% which 

 are not divided into Families by Mr. Medley ^^'ood. On the other 

 hand, we have no recorded Species of Podostemace;e nor of Goode- 

 noviesB. 



The Cape Peninsula List, compiled by Dr. Harry Bolus and 31ajor 

 Wolley-Dod, and published in 1903, gives the following figures: — 



Families. Genera. Species. 

 93 485 2117 



The latter comparison is not witliout interest, in view <)f the fact 

 that the Cape Peninsula has been so comparatively well worked botani- 

 cally, and for such a much longer period tha)i the Transvaal, which in 

 measure may be considered to offset the much greater area and more 

 subtiopical climate of the Transvaal. 



