206 



NDEX 



Tension reflexes 146, 147 

 Thermal deathpoint 38, 42 

 Thigmotaxis 173 

 Touch receptors, active areas 142, 



166 

 Transamidination 116 

 Transmitters 156 

 Transphosphorylation 116 

 Tricarboxylic acid cycle 111, 112 

 Tropomyosin 9 

 Tuhifex tubifex 4, 19, 36, 70, 92, 



93, 94, 95, 96, 109, 124, 171 



Ultra-violet light 133, 176 

 Unloading tension 85 

 Urea 46-68 

 Urease 46 

 Uric acid 46-68 



Urine 



hypotonic 70, 74, 77 

 production rate 66, 81 

 technique for collection 47 



Ventral ganglia 129, 136 

 Vesicles at giant fibre septa 164, 

 165 



Water 



content 27, 70 



loss 3, 71, 72 



regional differences 2 



relations 69-82 

 Weight of fresh animals 71 



Xanthine oxidase 46 



X-ray diffraction studies 13, 57 



