256 
Peckham—The Sense of Sight in Spiders. 
the box, in the direction of the green paper. When five inches 
distant from it she paused, and then crept slowly on to it and 
remained quiet. She was then taken out of the box while the 
green paper was restored to the true nest, the red paper being 
put back into its former position, and the cotton nest removed. 
She was put back near the green paper, but wandered about 
the box for two hours. She then re-entered her nest and re¬ 
sumed the care of her eggs. 
Astia vittata. 5. This spider laid her eggs in the corner of 
the box which was surrounded by pink paper. They were laid 
on August 6. On August 7 and 8 she was pushed out of the 
nest and found her way back over the paper. 
August 9. The spider was taken out and yellow paper substi¬ 
tuted for the pink, which was transferred to an artificial nest. 
The spider was put back close to the yellow paper. She ran at 
once toward the pink, but before reaching the edge retreated, 
backing away as though she noticed something wrong. She 
then approached again, but again retreated. 
We left her in the box for two days, but she did not return 
to her eggs, nor pay any especial attention to the artificial 
cocoons. 
Phidippus morsitans. 1. The spider laid her eggs on June 
20, in the corner of one of our small boxes. We at once pasted 
pink paper around the nest. On July 21, 22 and 23 she was 
(with difficulty) forced out of her nest and allowed to find her 
way back over the pink paper. 
July 24. We took the spider out of the box and substituted 
blue paper for the pink around her nest, pasting pink around 
an artificial nest which we fastened in another corner, and put¬ 
ting a second artificial nest in another corner with no paper 
around it. We then dropped her in near the cotton which had 
no paper around it. She did not notice it, but ran violently 
across the box, across the blue paper, and into her own nest. 
Being pushed out, and away from the blue paper, she ran onto 
the pink paper and all over the cotton in the middle of it, al¬ 
though it impeded her very much, trying to get into it or un¬ 
der it. After three minutes of this she went away. She soon 
found her own nest again and ran into it, but was again pushed 
