130 



Prof. E. Forbes on the supposed Analogy between the 



Table II. — Ashante Currency. 



Names of Weights. 



W 

 oz. 



eight in 

 ackies. 



Value. 



Names of Weights. 



Weight in 

 oz. ackies. 



Value. 









£ 



s. d. 









£ s. d. 



Pessua .... 





l-64th 







o on 



Insuansan . . . 





2i 



11 8 



Damba . . 







l-32d 







o n 



Bodomu . 











^ 



12 6 



Takufan . . 







l-16th 







32- 



Ensan 













3 



15 



Taku . . . 







l-8th 







1 h 



Djuasul 













3£ 



17 6 



Taku-mienu 







l-4th 







1 3 



Sul . 













H 



12 6 



Takumiensan 







3-8ths 







1 10* 



Perisul 













5 



15 



Suafan . . 







3-4ths 







3 9 



Essien 













6 



1 10 



Dumafan 







U-12ths 







4 7 



Djua . 













7 



1 15 



Brofan 







1 







5 



Anenfii 













n 



1 19 2 



Agiratjwifan 







l T Vth 







5 5 



Esua . 













9 



2 5 



[nsuansafan 







lith 







5 10 



Suane-sul 











13* 



3 7 6 



Bodombufan 







Hd 







6 8 



Essua-nu 









1 



2 



4 10 



Sua . . . 







Hd 







7 6 



Essua- san 









1 



11 



6 15 



Duma 







l*th 







9 2 



Essua-san-su 



1 







2 





8 



Brofu . . 







2 







10 



Perigwan 









2 



4 



9 



Agiratj wi . . 







2£th 







10 10 



Entenu . 









4 



8 



18 



N.B. — An ackie is equal to 8 Ashante takus, and to 6 Fante takus. 

 (To be concluded in our next Number.) 



On the supposed analogy between the Life of an Individual and 

 the Duration of a Species. By Edward Forbes, Esq., 

 F.R.S., &c. Communicated by the Author.* 



In Natural History and Geology a clear understanding of 

 the relations of Individual, Species, and Genus to Geological 

 Time and Geographical Space is of essential importance. 

 Much, however, of what is generally received concerning 

 these relations will scarcely bear close investigation. Among 

 questionable, though popular notions upon this subject the 

 lecturer would place the belief that the term of duration of 

 a species is comparable and of the same kind with that of 

 the life of an individual. 



The successive phases in the complete existence of an 

 individual are, Birth, Youth, Maturity, Decline, and Decay, 

 terminating in Death. Whether we regard an individual as 



* Read before the Floyal Institution of Great Britain on 7th May 1852. 



