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conjoined¡£¡¡¡¡But¡¡how¡¡they¡¡are¡¡guided¡¡in¡¡this¡¡work¡¡is¡¡a¡¡perplexing¡¡
question¡£

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needles¡¡serve¡¡to¡¡tell¡¡them¡¡that¡¡this¡¡is¡¡the¡¡wrong¡¡end¡¡to¡¡seize£»¡¡for¡¡
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confinement¡¡often¡¡seized¡¡the¡¡needles¡¡near¡¡the¡¡middle¡¡and¡¡drew¡¡them¡¡
towards¡¡the¡¡mouths¡¡of¡¡their¡¡burrows£»¡¡and¡¡one¡¡worm¡¡tried¡¡in¡¡a¡¡
senseless¡¡manner¡¡to¡¡drag¡¡them¡¡into¡¡the¡¡burrow¡¡by¡¡bending¡¡them¡£¡¡¡¡
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burrows¡¡£¨as¡¡in¡¡the¡¡case¡¡formerly¡¡mentioned¡¡of¡¡lime¡­leaves£©¡¡than¡¡
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mouths£»¡¡or¡¡a¡¡point¡¡very¡¡near¡¡the¡¡base¡¡was¡¡seized£»¡¡and¡¡the¡¡leaf¡¡was¡¡
then¡¡quickly¡¡dragged¡¡or¡¡rather¡¡jerked¡¡into¡¡their¡¡burrows¡£¡¡¡¡It¡¡
appeared¡¡both¡¡to¡¡my¡¡son¡¡and¡¡myself¡¡as¡¡if¡¡the¡¡worms¡¡instantly¡¡
perceived¡¡as¡¡soon¡¡as¡¡they¡¡had¡¡seized¡¡a¡¡leaf¡¡in¡¡the¡¡proper¡¡manner¡£¡¡¡¡
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leaves¡¡lying¡¡near¡£¡¡¡¡In¡¡another¡¡case¡¡a¡¡leaf¡¡stood¡¡nearly¡¡upright¡¡
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by¡¡bowing¡¡the¡¡whole¡¡leaf¡£¡¡¡¡On¡¡the¡¡other¡¡hand£»¡¡after¡¡a¡¡worm¡¡had¡¡
seized¡¡the¡¡base¡¡of¡¡a¡¡leaf£»¡¡this¡¡was¡¡on¡¡two¡¡occasions¡¡relinquished¡¡
from¡¡some¡¡unknown¡¡motive¡£

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burrows¡¡with¡¡various¡¡objects£»¡¡is¡¡no¡¡doubt¡¡instinctive¡¡in¡¡worms£»¡¡and¡¡
a¡¡very¡¡young¡¡one£»¡¡born¡¡in¡¡one¡¡of¡¡my¡¡pots£»¡¡dragged¡¡for¡¡some¡¡little¡¡
distance¡¡a¡¡Scotch¡­fir¡¡leaf£»¡¡one¡¡needle¡¡of¡¡which¡¡was¡¡as¡¡long¡¡and¡¡
almost¡¡as¡¡thick¡¡as¡¡its¡¡own¡¡body¡£¡¡¡¡No¡¡species¡¡of¡¡pine¡¡is¡¡endemic¡¡in¡¡
this¡¡part¡¡of¡¡England£»¡¡it¡¡is¡¡therefore¡¡incredible¡¡that¡¡the¡¡proper¡¡
manner¡¡of¡¡dragging¡¡pine¡­leaves¡¡into¡¡the¡¡burrows¡¡can¡¡be¡¡instinctive¡¡
with¡¡our¡¡worms¡£¡¡¡¡But¡¡as¡¡the¡¡worms¡¡on¡¡which¡¡the¡¡above¡¡observations¡¡
were¡¡made£»¡¡were¡¡dug¡¡up¡¡beneath¡¡or¡¡near¡¡some¡¡pines£»¡¡which¡¡had¡¡been¡¡
planted¡¡there¡¡about¡¡forty¡¡years£»¡¡it¡¡was¡¡desirable¡¡to¡¡prove¡¡that¡¡
their¡¡actions¡¡were¡¡not¡¡instinctive¡£¡¡¡¡Accordingly£»¡¡pine¡­leaves¡¡were¡¡
scattered¡¡on¡¡the¡¡ground¡¡in¡¡places¡¡far¡¡removed¡¡from¡¡any¡¡pine¡­tree£»¡¡
and¡¡90¡¡of¡¡them¡¡were¡¡drawn¡¡into¡¡the¡¡burrows¡¡by¡¡their¡¡bases¡£¡¡¡¡Only¡¡
two¡¡were¡¡drawn¡¡in¡¡by¡¡the¡¡tips¡¡of¡¡the¡¡needles£»¡¡and¡¡these¡¡were¡¡not¡¡
real¡¡exceptions£»¡¡as¡¡one¡¡was¡¡drawn¡¡in¡¡for¡¡a¡¡very¡¡short¡¡distance£»¡¡and¡¡
the¡¡two¡¡needles¡¡of¡¡the¡¡other¡¡cohered¡£¡¡¡¡Other¡¡pine¡­leaves¡¡were¡¡given¡¡
to¡¡worms¡¡kept¡¡in¡¡pots¡¡in¡¡a¡¡warm¡¡room£»¡¡and¡¡here¡¡the¡¡result¡¡was¡¡
different£»¡¡for¡¡out¡¡of¡¡42¡¡leaves¡¡drawn¡¡into¡¡the¡¡burrows£»¡¡no¡¡less¡¡
than¡¡i6¡¡were¡¡drawn¡¡in¡¡by¡¡the¡¡tips¡¡of¡¡the¡¡needles¡£¡¡¡¡These¡¡worm

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