Of the Wheel Animal. 271 
fit r; and, when I have thereby found them* 
1 change the Glafs for one that fhews them 
larger, and then watch all their Motions 
with great Attention. 
This little Creature fcews itfelf at fird 
(unlefs it be in its Globule Form) like a 
tranfparent Maggot or Caterpillar, and ap¬ 
pears lengthening out its Body confiderably 
at fome Times, and at others contracting .it 
as much. Its Motion from Place to Place 
is likewife then performed in the Manner of 
fuch InfeCts, fixing fird its Tail and extend® 
ing its whole Bpdy, then fattening its Headl¬ 
and drawing up its Tail to it: fo that by fix-' 
ing its Tail and pulhing its Body forwards, 
fattening its Head and drawing its Tail 
thereto, alternately, it works itfelf along 
pretty nimbly. Vid. fig. 1. 2. Plate XI. 
But one (hall often behold it changing 
this Appearance in an Inftant, and aifuming. 
a Form extremely different; for its Snout 
being pulled fomewkat inward, the anterior 
End becomes clubbed, and immediately di¬ 
viding, exhibits, mod furprizingly, to view* 
a Couple of femi-circular Indruments, before 
unfeen, round the Edges whereof many little 
Pibrilla move themfelves very brifkly, fome- 
times with a Kind of Rotation, and fome- 
times in a trembling or vibrating Manner. An. 
Opening or Mouth alfo appears in the Mid¬ 
dle between thefetwo Semi-circles. When in 
