10 DROSERA ROTUNDIFOLIA. Cuar. 1 
The tentacles in the act of inflection sweep through 
a wide space; thus a marginal tentacle, extended in 
the same plane with the blade, moves through an angle 
of 180°; and I have seen the much reflected tentacles 
of a leaf which stood upright move through an angle 
of not less than 270°. The bending part is almost 
confined to a short space near the base ; but a rather 
larger portion of the elongated exterior tentacles 
Fie. 4. Fig. a. 
(Drosera rotundifolia.) (Drosera rotundifolia.) 
Leaf (enlarged) with all the tentacles Leaf (enlarged) with the tentacles on one 
closely inflected, from immersion ina side inflected over a bit of meat placed 
solution of phosphate of ammonia (one on the disc. 
part to 87,500 of water). 
becomes slightly incurved ; the distal half in all cases 
remaining straight. The short tentacles in the centre 
of the dise when directly excited, do not become in- 
flected ; but they are capable of inflection if excited 
by a motor impulse received from other glands at a 
distance. Thus, if a leaf is immersed in an infusion 
of raw meat, or in a weak solution of ammonia (if the 
