1 8 Kingo Miyabe. — On the Life-history of 
pycnidia, the characteristic Alternaria- spores. He never 
observed the pycnidia accompanied by the perithecia or 
Sarcinula- spores in the same culture. 
He further states, that in the cultures of the ascospores 
obtained from perithecia growing on the same individual 
host-plant, or even from one and the same perithecium, some 
produced always the Sarcinula-spoves, and perithecia ; while 
the others, always the Alternaria- spores alone, or, in two cases 
only, with the pycnidia also. The microconidial form finally 
appeared regularly on both sorts of the cultures. Bauke 
draws the conclusion from these facts, that mycelia of two 
different characters belong to this same species. With him 
the Alternaria-spores, when sown constantly, reproduced the 
Alternaria alone ; and the Sarcinula- spores, regularly the 
perithecia and the Sarcinula . 
His account of the formation and development of the 
perithecia coincides nearly with that given by Gibelli and 
Griffini. He refuses to consider those hyphae which some- 
times happen to fasten on to the primordia of the perithecia 
as pollinodia. According to him, the formation of the peri- 
thecia is entirely apogamic. 
He describes further the inner changes of the growing 
perithecia, which were scarcely touched upon by the Italian 
authors. In from three to five weeks the formation of para- 
physes began to take place. From a number of parenchy- 
matous cells, situated generally near the base of the perithecia 
in nearly the same plane, a bundle of thickly crowded hyphae 
or paraphyses sprang out upwards. The tissue situated in the 
place, which was eventually to be occupied by the growing 
paraphyses, was gelatinised and absorbed. 
The perithecia formed in early spring produced the asci in 
the same season ; but those formed later on in summer usually 
refused to grow after the formation of paraphyses had begun. 
In this state they passed the winter as sclerotia. The asci 
were formed as the branches of the basal cells of paraphyses. 
The contents of the latter contributed the nourishment for the 
growth and ripening of the ascospores. 
