Explanation of Figures. 



Fig. 1. — A root of Buckley a two years old, with abundant small haustoria ; 

 in digging the root was partly broken. hr, host-root ; ha, haus- 

 torium ; ep, epicotyl ; lip, hypocotyl. Nat. size. 



Fig. 2. — Round haustoria on Cryptomeria japonica, nine years old. a, six 

 years old ; b, one year old ; c, six years old ; d, young one on small 

 rootlet. Nat. size. 



Fig. 3. — Old haustoria on Car pinus japonica, twelve years old. 3. a, frontal 

 view showing the elliptical shape of the haustoria. 3. b, side view. 

 I, lateral haustorium ; t, terminal haustorium ; oh, obliterated haus- 

 torium. Nat. size. 



Fig. 4. — Very old haustoria on Abies firma. The primary attach ing-fold 

 (at) is lifted away from the host ; parallel striation seen near the 

 apex of the haustorium. 4. a, the host-root, to a great extent des- 

 troyed ; at h the host is hypertrophied and the portion beyond the 

 haustorium is retarded in its growth in thickness ; m, attaching 

 place of a haustorium which has already perished; n, the same, the 

 distal portion of the host-root being totally lost. 4. b, haustorium 

 with very thick mother-root and neck. Nat. size. 



Fig. 5. — Haustoria showing the transition of the lateral to the terminal 

 position, all attacking Cryptomeria japonica. 5. a, young haustorium 

 with rounded and smooth surface, and with free portion (pr) of the 

 mother-root retarded in growth. 5. b, somewhat older specimen with 

 obliterated free portion of the mother-root (pr) ; cs, the contact 

 surface with the sucker (sue) in its center. 5. c, old terminal specimen, 

 dome-shaped in side view, and with uplifted process of attaching- 

 fold. Nat. size. 



Fig. 6. — A decayed haustorium on Abies firma with its axial part still 

 joined firmly to the wood of the host. The cortex of the host is 

 stripped off to show the connection of the haustorium. hv, vascular 

 strand having the shape of a vertebral bone ; hw, wood of the 

 host, x 2. 



Fig. 7. — Longitudinal section of haustorium two years old on Cryptomeria, 

 drawn semidiagrammatically. From cross-section of the host-root it 

 may be learned that the haustorium attached itself to the host at 

 the end of its second year. co, cortical part ; ax, axial part ; ca, 

 cambium ; sue, sucker ; at, at', primary and secondary attaching- 



