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May 1929

Ciliary Movement.

Arch Ophthalmol. 1929;1(5):663. doi:10.1001/archopht.1929.00810010686021

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This little book has nothing to do with the movement of the ocular cilia but is an interesting compendium of the existing knowledge regarding cilia in the animal and plant kingdom. The movements of cilia are adequately discussed according to the hypotheses of Schäffer, Heidenhain and others.

The force exerted and the work done by cilia is treated in another chapter, and the relation of ciliary movements to changes in the ionic concentration of the surrounding fluid is ably handled, the author having done considerable original work in this particular field.

The functions of cilia throughout the animal kingdom is the subject of the last chapter, but being a biologist the author gives little room for a discussion of ciliary movement in the mammalian body.

The book is well illustrated and surprisingly nontechnical for a subject which is usually treated by the abstruse sign language of biometrics. It

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