SUBJECT INDEX 



237 



propagation of the contraction 



wave (rate), 160 

 respiratory quotient, 103 

 Mytilus sperm tails and ATP, 108 



Nemertine, control of ciliary acti- 

 vity, 123 



Nervous control of ciliary activity, 

 121-4, 197-8 



Neuroid transmission in meta- 

 chronism, 180-2, 184-90 



Neuromotor fibrils, 66-7, 196-7, 

 198-9 



Nicotine 



and abolition of inhibition, 123 

 and ciliary activity, 117 



Nitrate ions, 98 



Noradrenaline, 116 



Nucleic acids in cilia and flagella, 

 29, 60 



Nyctotherus membranelle, root fib- 

 rils, 62, 66 



Ochromonas, flagellum with masti- 



gonemes, VIII 

 Opalina cilia, 

 contraction, 



form of beat, 142-3, XVIII 

 frequency of beat, 160 

 propagation of the contraction 

 wave, 160 

 metachronism 



and root fibrils, 198 

 rate of transmission, 181 

 symplectic pattern, 175-6, 

 182-4, 190-2, XVIII 

 movement 



and electric currents, 90-3 

 and osmotic pressure, 95 

 and viscosity, 86 

 effect of cuts between cilia, 125 

 restoration of beat by electric 



currents, 93 

 reversal of beat, 193-6 

 by cations, 99-100 

 by electric currents, 90-93 



by osmotic pressure, 95 

 by potassium chloride, 93, 99 

 structure, 



basal body, 54 

 root fibrils, 67, 198, XIII 

 Opalina pellicular ridge fibrils, 64 

 Opercularia, stalk structure, 36 

 Ophrydium cilia, 



basal body contents, 27 

 basal body dimensions, 53 

 elongation in development, 52 

 Ophryoscolecidae, ciliary root fib- 

 rils, 66 

 Orthoplectic rows of cilia, 171 

 Osmotic pressure and ciliary acti- 

 vity, 94-5, 144 

 Ostrea gill cilia, 

 activity and 

 ATP, 108 

 azide, 106 

 cyanide, 107 

 dinitrophenol, 106-7 

 malonate, 107 

 monoiodoacetic acid, 103 

 osmotic pressure, 94 

 pH, 97 



respiration, 102 

 sodium fluoride, 105 

 temperature, 80 

 glycogen energy store, 103 

 inhibitory control of gill cilia, 

 122, 197 

 Ouabain (Strophanthin), 117, 



119-20 

 Oxygen and ciliary activity, 102-3 



Pacemaker theory, 186-8, 194 

 Parartieciufn cilia, 

 contraction, 



bending couple, 147, 165 



force exerted, 165 



form of beat, 140, 145 



frequency of beat, 160 



optimum length, 172 



propagation of contraction 

 wave, 160 



work done, 165 



