Manchester Memoirs, Vol. Iv. (191 1 ), No. t>. 7 



B. C. D. 



Fig. III. 



A. Series of sections through a peduncle of the "robust'' type.' 



B. ,, ,, ,, " normal ' ,, 



C. ,. ,, ,, ''slender" „ 



Z). ., ,, the ijeduncle of the abnormal specimen. 



(All tl»e diagram outlines and the relative sizes of the bundles 

 sketched with the aid of a camera lucida. ) 



