. In brook and bayou; or, Life in the still waters . themselves and build their own houses. If you examine minutely all the members ofthe vaginicolan family you may spy out one ofNatures secrets which she never breathed toanybody until long after she made these proto-zoans. You have already noticed that Naturew^as beginning to make loricas, into which theanimals could retreat in times of danger. Nowthe secret you may discover is that she alreadyhad in mind a strong, hard house, like the snails,into which the owner could withdraw, dosingthe door heJiind Jiim to bar out intruders; and,while she
. In brook and bayou; or, Life in the still waters . themselves and build their own houses. If you examine minutely all the members ofthe vaginicolan family you may spy out one ofNatures secrets which she never breathed toanybody until long after she made these proto-zoans. You have already noticed that Naturew^as beginning to make loricas, into which theanimals could retreat in times of danger. Nowthe secret you may discover is that she alreadyhad in mind a strong, hard house, like the snails,into which the owner could withdraw, dosingthe door heJiind Jiim to bar out intruders; and,while she was working among these Vagivicolce^she was experimenting on just such a house asthis. You will find the snails house closed se-curely by the horny operculum he draws intothe opening; and the JPyxicola has a similaroperculum to close his vase. Attached to theside of its lorica the Thuricola has a valve CILIATA. 57 which closes when the animal shrinks downinto its case, as the lid closes over the nest ofthe trapdoor spider. Think of spiders and pro-.
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Keywords: ., bookcentury1800, bookdecade1890, bookidinbroo, booksubjectzoology
