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INFECTIVES GRANULES » OF PROTOZOÀ 
539 
are seen in the li!e historiés of ihe Mastigamœbæ so fu Lly de- 
scribed by Goldschmidt (see also pp. 265-267 and fig. 1 12 of my 
book). 
1 select lor spécial nolice the reproduction of the amœba 
described in detail by Lislon ans! Marlin, not only because it 
oflers a very typical example of the process of internai bud- 
formalion, but because the observations were madein my labo- 
b 
A, specimen witli one large and one small bucl; B, smaller specimen with 
one bud; C, a small specimen with one full-sized bud and two small ones ; 
D, a specimen with a full-sized bud in process of libération from the parent; 
E, a bud recently liberated, with its nucléus not fully formed; F, a small 
amœba containing a large bud. Ail the amœbæ contain numerous chro- 
midia and ingested bacteria scattered in their cytoplasm; N, principal nu- 
cléus, which takes no share in the bud-formation ; 6, buds in varions stages 
of formation. After Liston and Martin. 
ratory and I am able to youch for their accuracy. In the living 
condition the amœba was seen somelimes to divide as a whole 
into two by binary lission, after apparent disappearance of the 
nucléus. More frequently the amœba, while moving about and 
feeding actively, was seen to extrade liny buds from its cyto- 
plasm, and these buds moved off as small amœbulæ which 
grew to the size of their parent and produced other buds in lheir 
turn. Byboth these methodsof reproduction, but especiallyby 
