folds ; st, striated band ; va, vascular trand ; ne, vessel in the neck ; 

 mo, wood of the mother- root ; ck, corky layer ; pi, pith ; io, wood 

 of the host ; ha, bast of the host, x 25. 



Fig. 8. — Cross-section of haustorinm one year old on (Jryplomeria. co, 

 ax, etc., as before, x 25. 



Fig. 9. — Diagram of longitudinal section of an old haustorinm on Abies. 

 It attacked the host at an early stage, thus the wood of the host 

 is greatly hypertrophied. mo, wood of the mother-root : va, vascular 

 strand ; ht, bottom of the axial part ; at, attaching-fold ; io, h, wood 

 and bast of the host, x 3. 



Fig. 10. — Diagram of longitudinal section of the haustorinm five years old, 

 given in Fig. 3 t ; it has a rhombic outline with the vascular strand 

 diverging in a lateral direction. The growth of the host surpasses 

 that of the haustorinm and so the contact surface becomes convex 

 towards the host, mo, etc., as before. x 3. 



Fig. 11. — Portion of a sucker in longitudinal section and host (Oryptomeria) 

 in cross-section, showing the apical cells of the sucker in contact with 

 the host, sue, lateral portion of the sucker; ha, bast of the host; w, 

 wood of the host ; ca, cambium of the host and the haustorium ; the 

 line A shows the cambium ring; and ß, the front of the sucker, x 140. 



Fig. 12. a. — Cross-section through the neck of the haustorium. vs, vessel ; 

 co, cortical parenchyma. x 70. 



Fig. 12. h. — Longitudinal section through the neck of the haustorium. vs, 

 vessel ; mo, branch of wood of the mother-root ; ho, bottom of the 

 axial part ; ex, external and in, internal portion of the neck, x 70. 



Fig. 13. — Vessel in the neck of the haustorium. x 800. 



Fig. 14. — Portion of cross-section of a young haustorium. va, vascular 

 strand ; pi, pith ; mr, parenchymatous cells in the vascular strand ; 

 ca, cambium ; co, cortical parenchyma, x 250. 



Fig. 15. — Cross-section of an old haustorium. vs, vessel of the vascular 

 strand ; co, cortical parenchyma ; ca, cambium ; mr, medullary ray 

 in the cortical part ; mr' , medullary ray in the axial part, x 380. 



Fig. 16. — Cross-section (a) and tangential section (h) of an old haustorium. 

 vs, vessels ; mr, medullary ray ; ca, cambium ; co, cortical paren- 

 chyma, x 250. 



Fig. 17. — Cross-section of the inner portion of the axial part of a very 

 old haustorium, showing the disorganization of the tissue. Pare a- 

 chymatous cells (pa) are filled up with yellowish substance. Their 

 walls as well as those of the vessels (vs) swollen, x 350. 



