Fertilisation in Ascobolus furfuraceus Pers. 161 
10. Harper, R. A. “ Die Entwickldng des Peritheciums bei 
Sphaerothcca castagnci." Ber. d. Deutsch. 
Bot. Gesell. XIII., 1895, p. 475. 
11. Harper, R. A. “Sexual Reproduction and the Organization of 
the Nucleus in Certain Mildews,” 1905. 
Carnegie Institution of Washington. 
12. Janczewski, E. “ Morphologic des Ascobolus furfuraceus." Bot. 
Zeit. XXIX., 1871, p. 257. 
13. Woronin, M. “ Zur Entwicklungsgeschichte des Ascobolus 
pulchenimns Cr., u.s.w.” Beitr. zur 
Morphol. u. Physiolog : der Pilze, Zweite 
Reihe, 1866. 
DESCRIPTION OF FIGURES ON PLATE IV. ILLUSTRATING MISS 
E. J. WELSFORD’S PAPER ON “FERTILISATION IN ASCOBOLUS 
FURFURACEUS. 
Fig. 1. Young Ascocarp. From fresh material, (x 1500). 
Fig. 2. Mycelial hyphae showing numerous nuclei. ( x 1250). 
Fig. 3. Transverse section of a young ascocarp in which the cells of the 
scolecite are binucleate. ( x 625). 
Fig. 4. Transverse section of a slightly older asocarp. Numerous nuclei 
visible in the cells of the scolecite. ( x 625), 
Fig. 5. Longitudinal section of a scolecite showing passage of cytoplasm 
through the pores, (x 625). 
Fig. 6. Oblique section of scolecite showing pore, (x 625.) 
Fig. 7. Scolecite showing migration of nuclei and cytoplasm, (x 1250). 
Fig. 8. Longitudinal section of scolecite showing nuclear fusion in ascogenous 
cell. Nuclei shown in which fusion is complete and others 
in which the two nucleoli are still separate. ( x 1250). 
Fig. 9. A single fusion nucleus and another in which the nucleoli have not 
fused, (x 1250). 
Fig. 10. Longitudinal section of scolecite, fusion nucleus in an ascogenous 
hyphae. (x 625). 
Fig. 11. A chlamydospore. From fresh material, (x 625). 
