PLATE II. 



14— 15^ )6 



TYPES OF TWIGS AND PITH. 



1. Tulip Tree (alternatt- l>rancliiuj;(. 

 -. Catalpa (whorle*] brancbinf:) . 

 3, Whitf Ash (opposite branching). 

 I- 'iray L'.irch (slender and warty). 

 ."'. Staj:hiirn Snmach (hairy), 



6. Klderl>erry (lenticels prominent). 



7. Black Cberry (lentirels transversely € 



gated). 



8. Chestnut (lenticels small and numerous). 



Drawings are about one-half natural size. 



9. Black Uuiii (N-iiti'HU few and inconspicnons). 



10. Black Walnut (rliaml)ered pith). 



11. Sumach i large pith). 



12. Sassafras (medium-sized pitb). 



13. Oak (star-sha|.t-d pith). 



14. Black Alder ttriancular pith). 



15. Common Locust I angular pith). 



16. Elm (circular pith(. 



17. Birch (semicircular or irregular pith). 



