654 Marvels of the Universe 
numerous hair-like append- 
ages. In the lower photograph 
one of these is seen more 
highly magnified, and it will 
be noticed it seems enclosed 
with a kind of black ring. It 
is probable that this exercises 
a sort of pinching action to 
stop the flow of the fluid web, 
for it is well known that 
Spiders can use all their spin- 
nerets simultaneously or only 
part of one, as they wish. 
On the next page the ter- 
minal tubes are well shown. It 
will be better seen in the photo- 
graph which is more magnified 
still, that each individual tube 
ends in a little delivery tube— 
much like the narrow brass 
ending of the fireman’s hose 
—which is to give a greater 
Photo by) [He SoSpitia; projective power. Before pas- 
A SPINNERET OF THE SPIDER. 
These spinnerets vary in number in different species, and are conical projections with sing on, note should be made 
numerous hair-like appendages at the tips. of the very beautiful skin of 
the body. Magnified con- 
siderably in an accompanying 
illustration, it will be seen to 
be an object of great beauty 
in design. 
The legs and feet next claim 
attention, the joints being 
of especial interest. In the 
bottom left-hand corner of the 
full page it is evident that a 
kind of protecting membrane 
surrounds the joint, the special 
object of which it is difficult 
to understand, but it is usually 
thought to be of a protective 
nature. Curiously, however, 
the envelope does not seem 
to be present in all species, 
or even in all the joints of 
the same animal. Owing to 
the legs of the Spider being 
required to have a very free 
movement, joints of a ball-and- 
socket type are in evidence, 
& 
Photo by [B. J. Spitta, F.RMLS. 
A SPINNERET OF THE SPIDER. 
One of these projections more highly magnified. 
