PAGE 



THE CO-ORDINATION OF BEAT OF CILIA 



1 . Introduction 1 70 



2. The compounding of synchronously beating cilia 171 



3. Types of metachronal pattern 173 



4. The mechanism of metachronism 180 



5. Some thoughts on the origin and development of meta- 



chronism 190 



6. Ciliary reversal 192 



7. Inhibition and activation 197 



8. Root-fibre systems and co-ordination of ciliary beat 198 



9. Summary 199 



APPENDIX 201 



REFERENCES 202 



AUTHOR INDEX 225 



SUBJECT INDEX 231 



81069 



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