382 MR. E. B. POULTON ON THE COLOUR-RELATION BETWEEN EXPOSED 
Date 5 , &c. 
1 
2 
3 
4 
5 
4 other larvae in 
compartmented 
tubes. 
5 larvae free in 
glass box. 
Sept. 4, 6.30-6.45 p.m. 
,, 9.10 p.m. . . 
„ 11.45 p.m. 
Sept. 5, 12.40 p.m. 
„ 2 P.M. . . . 
,, 4.30 p.m. . . 
,, 10.55 p.m. 
Cr 
P 
Cr 
Cr 
H . 
H ® .£ 
£ d 
(1) & 
C£Ci 
ci H O 
x/i 05 
Pr 
Cr 
K a g 
r-l S 
5 ° 
o ^ 
p C0H< 
fls 
m 
P 
Cr 
h-T £ 
1—H p 
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o 
o 
CO 1-1 
Pr 
Few notes 
taken, be¬ 
cause it was 
not known 
how long 
the larvae 
had been 
suspended 
when cov¬ 
ered 
Sept. 4, 11.45 
p.m., 2 pu¬ 
pated re¬ 
cently 
Sept. 5, 9.50 
a.m., all 
pupated 
These were 
free to sus¬ 
pend them- 
selves 
among' the 
gilt and 
black tubes 
surround- 
the other 
larvae. 
Sept. 5, 9.50 
a.m., all 
pupated. 
Results, Sept. 7 . . 
Dead 
Dead 
Gold 
below 
Very 
light 
(3) 
Gold 
below 
Very 
light 
(3) 
Black 
below 
Very 
light 
(3) 
2 gold below 
contained : 
1 (4), very 
light pink 
and little 
gold 
1 very light; 
(3) 
2 black below 
contained : 
1 (2) 
1 only par- 
t i a 1 1 y 
changed, 
but appa¬ 
rently a 
dark'(3) 
1 close to 1 
tube, gilt 
outside, 
was dark 
(3). 
1 good deal 
further off 
was (2). 
3 quite close 
to 1 tube, 
black out¬ 
side, were: 
1 dark (3) 
1. . (3) 
1 light (3). 
These all on 
glass roof. 
- 
5 
The results produced after the larv® had been covered for the whole of Stage III. 
( i.e. 1, 2, &c.) are all the same, the position of the gilt chamber making no difference, 
while in those covered for a shorter time the difference is very great, the two pup® in 
the tubes with the gilt chamber above being very dark, and supplying the only 
instance of a (2) in the whole of the experiments with compartmented tubes. It is 
probable, in fact nearly certain, that the darkness of these two pup® is at any rate 
partially due to individual tendencies or to influences which acted before the larv® 
were covered. There are no evidences of any colour-relation between the free pup® 
and the neighbouring tubes. 
(y) In this, the last experiment with compartmented tubes, I removed the upper 
