WOOD AND FOREST. 



Fig-. 24. Spiral Grain in Cypress. 

 After Roth. 



Often, as in mahogany and 

 sweet gum, the fibers of several 

 layers twist first in one direc- 

 tion and then those of the next 

 few layers twist the other way, 

 Fig. 24. Such wood is pecu- 

 liarly cross-grained, and is of 

 course hard to plane smooth. 

 But when a piece is smoothly 

 finished the changing reflec- 

 tion of light from the surface 

 gives a beautiful appearance, 

 which can be enhanced by 

 staining and polishing. It 



Fig-. 25. Planed Surface of Wavy-Grained 

 Maple (full size). 



Fig-. 26. Split Surface of Wavy-Grained 

 Maple (full size). 



