160 E.J. Welsford. 
related than are those which fuse in the one-celled ascogonium of 
Humaria granulata. The nuclei which fuse in the ascogenous 
cell are partly derived from the neighbouring cells of the scolecite. 
If these cells be regarded as female, the fusions in Ascobolus 
furfuracens are quite comparable to those seen Humaria granulata 
and Lachnea stercorea or to the association of female nuclei in 
pairs first observed by Christman (4) in Phragmidium speciosum. If 
however the cells of the scolecite be vegetative, the fusions in 
Ascobolus furfuracens are to be related, rather, to the fertilization 
of a female by a vegetative nucleus which occurs in Phragmidium 
violaceum, Blackman (1). 
I have to thank Miss H. C. I. Fraser, at whose suggestion this 
work was undertaken, for valuable help and criticism throughout 
its progress. 
REFERENCES. 
1. Blackman, V. H. “ On the Fertilization, Alternation of 
Generations and General Cytology of the 
UredineEe.” Ann. Bot., XVIII., 1904, 
p. 323. 
2. Blackman, V. H., and Fraser H. C. I. “ Sexuality and 
Development of the Ascocarp in Humaria 
oranulata, Quel.” Proc. Roy. Soc. Ser. 
B. LXXVII., 1906 p. 354. 
3. Blackman, V. H., and Fraser, H. C. I. “ Fertilization in 
Spliaerotheca." Ann. Bot. XIX., 1905, 
p. 567. 
4. Christman, A. H. “ Sexual Reproduction in the Rusts.” Bot. 
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5. Claussen, P., “ Zur Entwickelungsgeschichte der Ascomyceten 
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6. Dangeard, P. A. “ Recherches sur le Developpement du 
Perithece chez les Ascomycetes.” Le 
Botaniste. 9me. ser., 1904. 
7. Fraser, H. C. I. ‘‘On the Sexuality and Development of the 
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Bot. July 1907. 
8. Harper, R. A. “ Ueber das Verhalten der Kerne bei der Frucht- 
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Jahr. f. vvies. Bot. XXIX., 1896. 
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