205 
IVilhs.—A ?e and Area. 
o 
ignorant, and which was written by our leading distributionist, Dr. H. B. 
N2 of species 
log (N? of species) 
Fig. 2. Logarithm curve for Rubiaceae (from Willis, ‘ Dictionary’) with corresponding 
curve for all flowering plants beside it (from Willis, ‘ Age and Area’). 1 
Fig. 3. Logarithm curve for Chrysomelid beetles, with corresponding curve for all 
flowering plants beside it (from Willis, ‘Age and Area’). 1 
Guppy—the ‘ Homes of Family Names.’ The names in the Telephone 
Directory were found to give a hollow curve, the great bulk of the names 
1 Figs. 2 and 3 are reproduced by permission from Willis and Yule ( 13 ); the blocks kindly 
lent by the Syndics of the Cambridge University Press. 
