Snap, I. INFLECTION INDIRECTLY CAUSED 25 
than 17 m. 30 s. In the course of some hours this 
minute bit of meat, from having been brought into — 
contact with some of the glands of the central disc, 
acted centrifugally on the outer tentacles, which all be- 
came closely inflected. Fragments of flies were placed 
on the glands of four of the outer tentacles, ex- 
tended in the same plane with that of the blade, and 
.three of these fragments were carried in 35 m. through 
an angle of 180° to the centre. The fragment on 
the fourth tentacle was very minute, and it was 
not carried to the centre until 3 hrs. had elapsed. In 
three other cases minute flies or portions of larger 
ones were carried to the centre in 1 hr. 30s. In 
these seven cases, the fragments or small flies, which 
had been carried by a single tentacle to the central 
glands, were well embraced by the other tentacles 
after an interval of from 4 to 10 hrs. 
I also placed in the manner just described six small 
balls of writing-paper (rolled up by the aid of pincers, 
so that they were not touched by my fingers) on the 
glands of six exterior tentacles on distinct leaves; 
three of these were carried to the centre in about 1 hr., 
and the other three in rather more than 4 hrs.; but 
after 24 hrs. only two of the six balls were well em- 
braced by the other tentacles. It is possible that 
the secretion may have dissolved a trace of glue or 
animalised matter from the balls of paper. Four par- 
ticles of coal-cinder were then placed on the glands 
of four exterior tentacles; one of these reached 
the centre in 3 hrs. 40 m.; the second in 9 hrs.; the 
third within 24 hrs., but had moved only part of the 
way in 9 hrs.; whilst the fourth moved only a very 
short distance in 24 hrs.,and never moved any farther. 
Of the above three bits of cinder which were ultimately 
carried to the centre, one alone was well embraced. by 
