NATURAL HISTORY. 53 
tile feet-like processes. By the assistance of 
these appendages it attaches itself, as shown in 
figure 1, at e, and thus preserves a steady 
position, while the wheel-like organs are in 
motion. Sometimes it attaches itself like a 
common leech (Hirudo medicinalis), and moves 
from one spot to another, alternately fixing by 
the head and tail, and bending itself, as shewn 
in figure 3, plate 6. 
The apparent joints c, c, c, c, in the various 
figures, are formed at the will of the animalcule ; 
they do not appear to be confined in number or 
situation ; the integument (c), where a joint is 
4, 
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7 
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