From the shape and position of the phagocytic organs it is obvious that they form admirable strainers through which the fluid of the body-cavity filters (figs. [Please select]
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Their feet are webbed, and their bill is set with ridges, which serve as sieves or strainers, as do the 'gutters' on a Duck's bill.' [Please select]
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Theoretically such a strainer should work well, but in actual practice nearly all strainers are a source of continual worry. [Please select]
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Every once in a while the housekeeper should take off the strainers from the faucets and boil them. [Please select]
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Many estates use two strainers; the first a more robust one containing "30 mesh" gauze, and the second the fine "60 mesh." [Please select]
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At the end of the nitration the di-nitro-naphthalene is removed to earthenware strainers, allowed to drain, washed with hot water and soda until all acid is removed, washed with water and dried. [Please select]
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When filters and strainers are used they should be carefully cleaned at regular intervals, since if they are permitted to accumulate impurities they become a source of contamination instead of its remedy. [Please select]
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