BAEEIEB FACTOES IN GIPSY MOTH TREE-BANDING MATERIAL. 11 
of paper (3) was placed in its way (as in Experiment A), whereupon it turned 
completely around and began to crawl in the opposite direction (parallel to 
the band). As the strip of paper was again interposed it stopped altogether 
(opposite the bridge). It backed up finally, turned, and began crawling in 
the direction away from the band, but as it came close to the strip of paper, 
which was interposed again, it turned at an angle and started (diagonally) 
toward the band — the strip of paper guiding it in that general direction. It 
got upon the strip of paper, however, when about % inch from the hand, and 
soon got off again, but after a pause got on once more and after getting over 
on the opposite side it crawled off it and away. 
At the fourth placing, the caterpillar halted at the very start and had to be 
prodded (one-half minute later) to get it started again. It responded very 
slowly. It swung its head slightly, and, turning at right angles, started to crawl 
away (parallel to the band). It executed another right-angled turn as the strip 
of paper was placed in its way (now facing away from the band), and still 
another, when the paper was interposed as it started to crawl directly away 
from the band, being now parallel to the hand. It halted and finally came to 
rest when the strip of paper was placed in its way a third time. It began to 
crawl about If minutes later, and as the strip of paper was placed in its 
way it turned in the direction opposite from the band ; very soon after, 
when the strip of paper was interposed again, it turned at right angles (parallel 
to the band again) and started to crawl away once more. This time it crawled 
upon the interposed strip of paper and after crawling on it a short distance 
toward the band, it got on the opposite side and finally crawled off it, pausing 
and swinging its head before crawling away. At no time was the caterpillar 
nearer than 5 inches to the band. 
The caterpillar was placed a fifth time. It started to turn out of its course 
at once and was redirected. Finally, after a good deal of hesitation through- 
out, it approached within li inches of the band. 13 It turned at right 
angles here and started crawling parallel to the band, but on getting some of 
its legs into the molasses-flour band (4), which was placed in its way (hori- 
zontally), it turned in the direction opposite from the band; soon after — after 
touching the molasses-flour band as before — it turned at right angles a third 
time, and after crawling somewhat (parallel to the band) and touching the in- 
terposed molasses-flour band again (three times) it turned once more away 
from the band. It turned at right angles a fifth time, soon after, because of 
the molasses-flour band (bringing it parallel to the band again), and on touch- 
ing the molasses-flour band again it once more turned in the direction of the 
band. It swung upon the side of the band, on finally reaching it, then down, but 
swung back on it on touching the molasses-flour band (which was waiting for it 
at the foot of the band), and landed at the foot of the bridge on finally 
swinging off a second time. It swung upon the bridge soon after and crawled 
up and finally across to the opposite side — tumbled off in going down latter 
side. Once, while on top of the band, it got partly off the cloth with some cf its 
legs on bare material, but soon got back. 
Placed a sixth time, the caterpillar swung upon the side of the band on 
finally reaching it (having crawled very slowly and hesitatingly from within 
about 1 inch), and after lingering a few moments swung down. It swung on 
and off again shortly afterwards, and after a pause started crawling parallel 
to the band (at a distance of about | inch) ; on touching the molasses-flour 
band, which was placed in its way, it stopped and backed up. On resuming 
and touching the same a second time it turned at right angles and started 
crawling directly away from the band. It turned the other way again, how- 
ever, on touching the molasses-flour band a third time (now parallel to the hand 
again), and on touching it a fourth time it turned and headed directly toward the 
band. It swung up on the side on reaching it and finally got on with its whole 
body but soon tumbled off, landing at the foot of the bridge. Then it swung 
upon the latter (on the side of the band) with some of its legs, and after 
brushing it with these it swung over on the uncovered part but soon swung back 
to the cloth, then again to the bare part, then off entirely and started crawling 
parallel to the band; on touching the molasses-flour band it turned and com- 
menced crawling directly away from the band. It turned at right angles again, 
however, on touching the molasses-flour band again, twice (now parallel to the 
band again), and after touching again shortly after, three times in succession, 
it turned and headed directly toward the band once more. It swung up again 
13 See footnote on p. 9. 
