. Fig. I.—A T.\RDIGR.\DE. Highly magnified. {From Doyere.) a quarter of an hour to several hours, according to the time its life has been suspended, the little animal crawls away " on its lawful ; In the same sort of position, in gutters, amongst moss, are another group of animals known as the RoTiFER.\ or wheel-animalcules. These are creatures of singular beauty which bear on their heads a number of cilia whose rhythmic flickering produces an appear- ance of a wheel going round. More than 200 years ago Leeuwenhoek recorded the fact that these little microscopic animals wer
. Fig. I.—A T.\RDIGR.\DE. Highly magnified. {From Doyere.) a quarter of an hour to several hours, according to the time its life has been suspended, the little animal crawls away " on its lawful ; In the same sort of position, in gutters, amongst moss, are another group of animals known as the RoTiFER.\ or wheel-animalcules. These are creatures of singular beauty which bear on their heads a number of cilia whose rhythmic flickering produces an appear- ance of a wheel going round. More than 200 years ago Leeuwenhoek recorded the fact that these little microscopic animals were also capable of drying up, and resuming their normal activities when moisture is again applied. As long ago as 1774-5 Mr. Baker, in a letter addressed to the President of the Royal Society, stated that the animal described " can, how- ever, continue many Months out of Water, and dry as Dust ; in which Condition its Shape is Globular, its Bigness exceeds not a Grain of Sand, and no Signs of Life appear. Notwithstanding, being put into Water, in the Space of Half an Hour a languid ^Motion bogins, the Globule turns itself about, lengthens by slow Degrees, becomes in the Form of a lively Maggot, and most commonly in a few Minutes afterwards puts out its Wheels, and swims vigorously through the Water in Search of Food : or else, lixing bv its Tail, works them
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