

i 



1. Portion of a tniiisveise section of Sflm6/'CT(N sttin of niii_- >c;u '.s ymwtli. Note the 

 primary bundles, utkI between them the inttrfascicnlar caiiibinin and evidences of 

 secondary xylem antl phloem. K.esin-canals aie .SL-atteied thrnu^^hont the cortex. Xote 

 also patches of sclerenchyma at the outer niaigin of cnrtex. 



2. Portion of a transverse section of a dicotyledonous stem, showinu^ urrano-ement of 

 the xylem, cambium, phloem, and bast-fibres. 



3. Portion of a transverse scrtion of tht yonnff stem of Lupnlns, showing the ramhial 

 rei;ion and young xylem and phloem elements. 



4. Part of a transvt-rse section of the stem of Finns, showing the 1 haiacteristit- 

 dicotyledonous arrangement ; lame resin-canals are seen in the cortex. 



(See Chaps, iv. and v.) 



