JOURNAL OF MICROSCOPICAL SCIENCE, 
EXPLANATION OF PLATE XII, 
Illustrating Mr. Hatchett Jackson’s Paper on Cyclocheta 
spongille. 
Fics. 
1.—Animal with disc turned towards observer. 
2.—Side view, showing shape of the body and sete. 
3, 4, 5.—Side view of body, showing successive changes in its shape in 
one and the same individual, 
6.—Enlarged view of upper part of fig. 2. 
~ ¥.—Ring (a portion) as seen under ocular 4, and object glass 8 (Hart- 
nack) with tube drawn out. 
The signification of the letters is the same in all the figures : 
i> Motor cilia. 
cl. Nodule at base of each cilium. 
s. Sete. 
st. b, Striated border. 
y. Hooked ring. 
A, Hooks. 
= Radii. 
d. Outline of central depression. 
b. Body. 
m. Mouth. 
ph.  Pharynx. 
0. Vacuole, apparently permanent 
e'. Occasionally appearing vacuoles. 
%. Endoplast. (nucleus auctt. 
