Ward. — ■ Thames Bacteria , ///. 213 
gelatine — taking up water- vapour from the cell — exactly as 
if no disturbance had happened. 
The movement consists in the sliding of the rods and 
filaments one over the other, and under the ■£$ 1S f ar t°° rapid 
to draw in detail, whence I had to make line-sketches from 
which the figures were copied later. 
The filaments are of various lengths, some being segmented 
very clearly into separate rods, others less clearly into longer 
segments. They are evidently growing and dividing as the 
active gliding movement continues, though of course it is 
impossible to trace that in detail. It is to be inferred, 
however, from the action of the film or lobe as a whole, for 
the filaments are laid fiat in tresses, coils, &c., in one plane on 
the gelatine, and they evidently grow by intercalary growth 
and segment into shorter and shorter rods. 
The worm-like segments glide over one another, as said, 
and by no means always in the same direction. 
Of three parallel segments, for instance, any one may go 
for a time in one direction while the others are slipping past 
it in the opposite one. In the same sense, there is no order 
as to stoppage, reversal of movement, &c. 
It is very interesting to see how fresh arrangements of the 
moving series are instituted. This may occur simply by an 
outside segment starting off on its own account, as it were, as 
a in the annexed diagram ; 
or a may meet /3, and form a new series, and in this case c 
will curve out into the increased space as indicated by the 
arrows. 
