Plate VIII. 



WOOD. 



29 



General subject What do figures 1, 2 and 8 represent? Define each. 

 What three principal parts In woody stems seep at fig. 8? Arc all these parls 

 observed in fig. 6 ? How many? Show tho difference of structure? Where 

 lathe new wood d<-|>"-ltcil in figures 4, 7, 8 and 9 ? Where In fig. 0? What 

 kind of stems does each mode of growth produce ? Describe fig. 5 fig. 7 fig. 

 10. What does fig. 9 represent ? How many years old ? Why? Trace all the 

 different parts In fig. 8, from a, the pith, outward. Show tho line of cells from 

 which the new wood and bark aro deposited. What figures are of Exogenous 

 wood? What of Endogenous? Describe fig". 4. f>. llnw many years old la 

 thn mttpr * V. 



