To Know a Fly |
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Page 23
... gently over a saucer of water until his feet just touch . Chances are he is thirsty . If so , he will lower his proboscis as soon as his feet touch and will suck avidly . When thirst has been allayed , the proboscis will be retracted ...
... gently over a saucer of water until his feet just touch . Chances are he is thirsty . If so , he will lower his proboscis as soon as his feet touch and will suck avidly . When thirst has been allayed , the proboscis will be retracted ...
Page 25
... gently into the most dilute mixture . Then try him in the next and so on up the series until his proboscis is low- ered . This is the weakest sugar solution that he can taste . Now test yourself . If you are the sort of person who does ...
... gently into the most dilute mixture . Then try him in the next and so on up the series until his proboscis is low- ered . This is the weakest sugar solution that he can taste . Now test yourself . If you are the sort of person who does ...
Page 53
... Gently tease them aside . Next to emerge in view are the two great breathing tubes supplying oxygen to the head . They adhere to the esophagus . Since they are the sole route of oxygen to the head , they also must be maintained intact ...
... Gently tease them aside . Next to emerge in view are the two great breathing tubes supplying oxygen to the head . They adhere to the esophagus . Since they are the sole route of oxygen to the head , they also must be maintained intact ...
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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