150 



THE BEGINNINGS OF LIFE 



concerned 



whilst those which grow upwards often give rise to several 

 chaplet-like series of these reproductive corpuscles i. 



Thus by the mere repetition of similar phenomena 

 in which a process of partial segmentation is largely 



' —a comparatively complex fungus -growth 



{Fenicllllum) results, differing only in minor respects 

 from those which have been found in some of my 

 solutions taken from closed and superheated flasks. 



The particular forms assumed by the outgrowths 

 from the germinating corpuscles, seem subject to much 

 natural variation for which we are utterly unable to 

 account. M. Trecul found that on exposure to the 



Mycodt 



cerevtsziC. 



Ventcllllum, He 



and partly into that of a large 



the view originally advocated by Turpin is correct, viz. 

 that Mycoderma and Penkillmm are simply two forms 

 which may be assumed by germinating beer ToruU^. 

 Nay^ more^ the Mycoderma itself is observed to be most 

 changeable in its form, as the qualities of the fluid in 

 which it grows alter ; and an already growing Mycoderma 

 is said to be capable of taking on the mode of growth 

 characteristic of Penkillmm 3. 



See Fig. 53, This mode of development into forms resembling 

 Penicillhim glanctm, was observed by Turpin in 1840, by the Rev. M. J. 

 Berkeley in 1855 (from porter yeast), and subsequently, by M. Pouchet, 

 in beer yeast and in that from cider. 



^ See also ' Compt. Rend.' t. 67, p. 11 64. 



^ On the other hand the relationship existing between Mycoderma and 

 Torulce is most distinct. When beer-wort is exposed to the open air 



'Sf- ( tl 



are 



./ 



'le 



rJi 



iioos 



to 



ciJre 

 offre 



'J 



s. 



Mais pi 





, s ^f^ 



■im 



-the sub 



:ititotii a grou 



air the cells of beer yeast grew partly into the form of f jk, Several \. 



,^ of tk aerial fi 



-.J 



disturbed, .Vki 



>tlioi:gh curiously 



h 4 



l&!orinorebv3'^ 



^s in the form d 



^a 



"s .^ 



T^l* 



-r 



'A corpusdes • 



■'■'■'^!^tty. and tHs 



I 



^^^- lateral b 

 results i 



r 



4- 



Ol 



in 



u 



H 



»">--. qne 



^ 



Bcr 



