394 
MR. E. B. POULTON ON THE COLOUR-RELATION BETWEEN EXPOSED 
In these results the effects of the white paper floor, although greatly obscured, 
must not be overlooked as acting upon the pupae on the food-plant as well as on the 
floor itself. In this case, of course, the colour exerted its influence during the whole 
of the preparatory period. 
Thus 118 pupae were obtained from this series, and 598 pupae altogether from 
Series III.—XIII., both inclusive, viz., in all the series which correspond respectively 
to single companies of larvae. In addition to these, 82 pupae were obtained from the 
mixed companies of Series II., and at least 20 in Series L, making a total of 700 
pupae examined, and affording the results upon which the conclusions of this paper 
are based. 
Recapitulation and Conclusions. 
It is now necessary to analyse the results of all the experiments in the above 
series in which larvae have been exposed to surroundings of different colours during 
the whole of the preparatory period, or, at any rate, during Stages II. and III., in order 
to present the entire proof of the influence of certain colours upon the larvae as con¬ 
trasted with the powerlessness of others. Incidentally, the negative results of the 
blinding experiments will be brought out at the same time. The tabular analysis 
becomes more complex after the earliest experiments because of the further subdivision 
of the degree of colour represented by (3); but, at the same time, all the shades of 
difference included under this one degree are together only ecpial to any one of the 
other degrees. The colours will he taken in the order in which they were tested. 
The effects of crowding, &c., cannot be gone into in the following Tables, although 
they are necessarily excluded in certain cases. 
1. Orange :—There was no influence shown in the one experiment in which this 
colour was used. 
2. Green. 
Degrees of colour. 
(1) 
(2) 
(3) 
(i) 
(5) 
Series II. Division C. 
5 
1 
= 6 
D. 
f 
3 
9 
= 13 
E. 
1 
3 
1 
= 5 
„ „ E. (blinded) . 
, , 
4 
1 
1 
- G 
H. 
1 
# # 
5 
1 
- / 
Series III. Division D. 
2 
Totals. 
2 
8 
25 
1 
3 
= 39 
Results expressed as percentages of 
the total 
51 
20-5 
64-1 
2-6 
hr. hr 
/ / 
