CELL-CONTENTS AND FORMS OF CELLS. 297 



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o g o ^ ETC* P 



f?f. IS** 





VI 



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^ 3*P y 

 8."^S 



IS 



By 



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 <"+ O O 



|o? 



55- S- 



sl 



rPI? 



ooo p^g'rt S'glg's 

 S-8^ ^S^gf &p| 



BCa ^-<0=-E; Ch55^3 



ually 

 ing a 

 of the 

 vascu- 

 tissue 



ch 

 (w 

 rs and 

 fibers) 



t 





* 5 S 



l-t" 1 HI o 3 O ^ 



Lf B.^iggg 



rg 35? % e a 



Cylindra- 

 ceous or 

 prismatic 



Forming a 

 part of the 

 xylem 



O g <<* r 1 2; 3 



JLt~| M o 3 O en 



9 2.p|B3p 



-s 



n 8S 



?lSc?c^ 



I 5 gf |4 



s "liiii 



Cylindra- 

 ceous or 

 prismatic 



8? 





a 



" 3 3 ?" B 1 - ^^ 





cr'Ss 

 gf? 



&S! 



^o3. 



The outer 

 layer of 

 herbaceous 

 plants 



n mature cells 

 insoluble 

 esin or tannin 

 masses 



Isodiametric 

 or polygonal 



At or near 

 he surface of 

 older roots 

 and stems 



