To Know a Fly |
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Page 25
... proboscis is flicked out again . Put him back into water ( this is the control ) , and the proboscis is retracted . Water , in ; sugar , out . The performance con- tinues almost indefinitely . Who can doubt that the fly can taste with ...
... proboscis is flicked out again . Put him back into water ( this is the control ) , and the proboscis is retracted . Water , in ; sugar , out . The performance con- tinues almost indefinitely . Who can doubt that the fly can taste with ...
Page 26
... proboscis response , but the only way for a fly to say " No " is to retract his proboscis , and it can be retracted only if it is first extended . Accordingly , one prepares several saucers of sugared water . A pinch of salt is added to ...
... proboscis response , but the only way for a fly to say " No " is to retract his proboscis , and it can be retracted only if it is first extended . Accordingly , one prepares several saucers of sugared water . A pinch of salt is added to ...
Page 34
... proboscis . Continued titillation elicits repeated extension - up to a point . Has the fly stopped because it is fatigued ? Shift your attention to a neighboring hair . As soon as this is bent the proboscis extends with its usual ...
... proboscis . Continued titillation elicits repeated extension - up to a point . Has the fly stopped because it is fatigued ? Shift your attention to a neighboring hair . As soon as this is bent the proboscis extends with its usual ...
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able activity amount animal ants appearance become bees behavior Bill Clark biologist blood body brain called caterpillars caused cells Chapter continued course creature dance drink drop eggs eight eventually example experiment experimental eyes fact feathers feeding feet female flies fluid fly's follow glucose hair hand head honeybee human hunger hungry insects interest jump kind known laboratory learning least legs less light live look lower males matter means mechanism merely MICHIGAN minute move nature nerve never observation odor once operation organ performed person piece prefer present problem proboscis protein question reach reason record removed result salt scientific scientist seen sense sensitive serve side simple stops student sugar supply taste thing tion trail tube turn understanding usually walk wings