Puate VI. 
Fig. 1. Part of the periphery of a haustorium attacking a root of Hemi- 
desmus indicus. In this the layer of cork is seen, the hypoderm 
(h) with contents collected into drops, the starchy cells and 
the thick-walled, pitted, sclerotic cells of the cortex (sc). 
Fig. 2. Masses of tabular crystals of calcium carbonate from the inner cortex 
of a haustorium on Lantana Camara. The cell contents in the 
cell on the right hand side (7) show the delicate reticulation in 
a crystal cell which has lain for some months in dilute glycerine 
and from which the crystals havc been dissolved. 
Fig. 3. Mulberry-like masses of calcium carbonate from the cortex of a 
haustorium on Capparis horridc. 
Fig. 4. Radiating crystal masses found in the euter cortex of another such 
haustorium. 
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fu) | 
Thick-walled cortical cells as in tig. i, from a haustorium on 
Vernonia travancorica. In one of these a mass of calcium 
carbonate crystals is to be seen. 
Fig. 6. A section through a part of a haustorium on a root of Toddalea 
aculeata. Note the masses of calcium carbonate crystals in 
the usual place, in the elongating part of the inner cortex. 
Also note that the collapsed layer (¢.l.) is broken down to a 
uniform mass of yellow substance and that this is continuous 
right down round the end of the wing of the host’s cortex to 
the angle opposite the edge of the sucker lobe (/). lac, 
Jacunar rezion. 
Fig. 7. A section through the cortical fold of a haustorium on Capparis 
horrida. The darker cells (d) are lignified and thickened and 
are not only found in the end of the fold but run up beneath 
the hypoderm for a considerable distance (d,d’). An enlarged 
drawing ,of such cells is seen in fig. 5 of Plate VII. lac, 
lacunar region. 
