LE PI DO PTE ROUS PUPJE AND THEIR SURROUNDING SURFACES. 
375 
Dates, &c. 
a 
b 
c 
d 
e 
1 
2 
3 
4 
5 
6 
Sept. 4, 11.30 a.m. . 
„ 11.45 am. . 
„ 1.25 p.m. 
„ 2.48 p.m. 
„ 4.5 p.m. . . 
„ 4.48 p.m. 
„ 6.5 p.m. . . 
Cl 
Cl 
Cl 
ci 
Cl 
Cr 
Cr 
Cr 
Cr 
CO 
Cr 
rn 
Cr 
GO 
„ 12 MIDNIGHT 
Sept. 5, 9.35 a.m. 
„ 2.30 p.m. 
1 P r 
(about 12 hours 
in tube). 
1 P 
(more than 12 
hours in tube). 
1 Pr 
(about 12 hours in tube). 
2 P 
(more than 12 hours in 
tube). 
P 
P 
About 19 houi 
0 in Stage III. 
About 19 houi 
in Stage III. 
About 18 horn 
in Stage III, 
Results, Sept. 7 . . 
All known about the beginning of suspension 
is that it had not begun 11.15 p.m., Sept. 3. 
Gold 
below. 
Dead. 
Black 
below. 
Gold 
below. 
Gold 
below. 
Black 
below. 
1 (black below) 
(3), 
rather golden; 
1 dead. 
2 with black below, both 
light (3) ; 
1 with gold below, light (3). 
Little gold on all 3, rather 
more on the last. 
(4); 
gold 
little 
for (4). 
Very 
light 
(3). 
(4); 
gold 
little 
for (4). 
Very 
light 
(3). 
(4); 
gold 
little 
for (4). 
Four more larvae were left free to suspend themselves on the glass roof, in a strong 
east light, among the gilded and black tubes surrounding the larvae tabulated above. 
Results :— 
1 pupa suspended near 2 tubes, gilt outside.very light (3) and little gold. 
1 „ „ 2 „ 1 black and 1 gilt, but nearer the latter light (3) and little gold. 
1 „ „ 1 tube, black outside.light (3) „ „ ,, 
1 isolated and fallen down from roof.very light (3) and little gold. 
4 
Comparing the dates of covering and pupation of the larvae, a, b, &c., it is seen that 
they were covered for a considerable time, but at any rate a portion (a.nd probably all 
in two cases) of the important earliest part of the stage must have elapsed before they 
were applied. There is no evidence for any difference between the colours of the 
pupae in these tubes corresponding to the different colours of the upper (or lower) 
chambers, but the pupae are not so light as those numbered 1, 2, &c., which were 
exposed to gold in one compartment or the other for the whole of Stage III. In 
these latter pupae the three in tubes with the gold chambers below were, on the 
whole, slightly lighter than the others, but there is hardly any difference. The free 
larvae produced pupae which were intermediate in colour between those numbered 
a, b , &c., and those numbered 1, 2, &c., and the individual pupae show traces of slight 
colour differences which correspond to their respective environments. 
The comparison of these results with all others in which the compartmented tubes 
were used will be shown by means of a tabulated analysis at the end of the last 
experiment of the kind in the next series. 
(/3) The next experiment was conducted as follows, and consists of three sets of 
larvae similar to those described in (a) subdivision : — 
