Fiff. 32. 



Ao«e.— Figures 22 to 27 and 29 to 31 are taken from Keyer's Waldbau, Figure 28 

 irom Gayer' s Waldbau, and Figures 32 to 35 from Messrs. Thos. Black & Sons' 

 catalogue (Berwick-on-Tweed). 



M 



