Explanation of the figures. 



PL n. 



Fig. 1. Fatsia japonica. 



A. Basal part of palmate veins. Through the dotted lines a, b, 

 c, d, e the sections a', h', c', d' , e' in C were taken respectively 

 (nat. size). 



B. Median longitudinal section of the same, showing the course of 

 vascular bundles ; the coloured bandies represent those stained 

 b}^ the injected SO4CU. The dotted lines a, h, c, d, e are like 

 in A (diagrammatic). 



C. Cross sections of the same ; a', h', c', d', e' are the sections 

 through a, b, c, d, e in A and B respectively, the coLjured 

 bundles are like in B (diagrammatic). 



D. Surface view of a porti(3n of the leaf, showing tlie termination 

 of vascular bundles being aöected by the 8O4OU injecticm 

 (uat. size). 



Fig. 2. Cross section of a vascular bundle of the stem of Vtcia Faba to 

 show xylem elements which contain aniline violet in consequence of 

 the injection ( x 200j. 



Fig. o. Cross section through the rhizome of Mmianthas trifoUata to show 

 xylem elements which contain eosin in consequence of the injection 

 (x70). 



Fig. 4. Cross section of a vascular bundle of the petiole of TracJûj car pits 

 excels I to show that much SO^Ca is contained in phloem elements 

 in consequence of the injection ( X 200). 



Fig. 5. 2 stages of the unfolding bud of Cornus controversa (nat. size). In 

 the A stage, hthium which has been injected into the stem is not 

 detectable in the young leaves, while in the B stage it is first 

 found in the larger leaves. (Compare exp. 56, 57.) 



