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C. C. FORSAITH 
3. Holden, Ruth, Reduction and Reversion in the North American Sahcales. 
Annals of Botany 26: 165-173, pis. 20-21. 1912. 
EXPLANATION OF PLATES IX-XI 
Fig. I. TiUa americana L.: transverse section of normal wood, showing 
diffuse parenchyma and thin-walled elements. X 200. 
Fig. 2. Same: tangential section, showing diffuse parenchyma and rays. 
X 200. 
Fig. 3. Hibiscus tiliaceus L.: transverse section, showing diffuse parenchyma 
and thick and thin-walled elements. X 200. 
Fig. 4. Same: radial section, showing diffuse parenchyma. X 200. 
Fig. 5. Fremontia californica Torr. : transverse section, showing diffuse 
parenchyma and thick-walled wood elements. X 200. 
Fig. 6. Same: radial section, showing diffuse parenchyma. X 200. 
Fig. 7. Aristotelia DC: transverse section, showing terminal parenchyma. 
X 200. 
Fig. 8. Same: tangential section through the end of the annual ring, showing 
terminal parenchyma. X 200. 
Fig. 9. Fagus grandifolia Ehrh.: transverse section, showing diffuse paren- 
chyma. X 200. 
Fig. 10. Same: radial section, showing diffuse parenchyma. X 200. 
Fig. ii. Nothofagus: transverse section, showing terminal parenchyma and 
crystal cells. X 350. 
Fig. 12. Same: tangential section through the end of the annual ring, showing 
terminal parenchyma and crystal cells. X 200. 
Fig. 13. Durio zibethinus L.: transverse section, showing diffuse parench3^ma 
and aggregate rays. X 150. 
Fig. 14. Same: showing diffuse parenchyma and crystal cells. X 400. 
Fig. 15. Same: radial section, showing diffuse parenchyma and crystal cells. 
X 250. 
Fig. 16. Same: tangential section, showing aggregate rays and diffuse paren- 
chyma. X 45. 
Fig. 17. Same: showing aggregate ray with included septate fibers. X 120. 
Fig. r8. Same: showing aggregate rays and leaf-trace. X 18. 
