288 



INDEX 



Nerves, irritation of, 75 

 of plants, 157, 158 

 , auditory, 227 et seq. 

 , cranial, 215 

 , hypogastric, 203 

 , motor, 147, 156, 165 et 

 seq., 180 

 Nerves, non-medullated, 144, 251, 



253 

 Nerves, olfactory, 222 



, optic, 130, 220 et seq. 

 , pelvic, 203 

 , peripheric, 75, 76 

 , sciatic, 75 

 , sensory, 194, 200, 214, 216, 

 231,256 



Nerves, splanchnic, 203 

 , trigeminal, 216 

 ,, , vagus, 182 

 ,, , vaso-motor, 86 

 , vaso-inhibitory, 86 

 Nervous breakdown, 259 



energy, 183 

 Neurasthenia, 260 

 Neurilemma, 161, 165, 204, 251 

 Neuritis, 158, 258 

 Neuro-electricity, 55 et seq., 67, 107 



204, 226, 254 

 Neuroglia, 168, 171, 203 

 Neuro-keratin, 100 

 Neurons, 168, 171, 191, 198, 222 

 Neuro-synapse, 171 

 Nissl's granules, 168, 189, 207 

 Nobili, 51 



Nodes of Ranvier, 192 et seq., 204 

 Noel Paton, 147 

 Noll, 5 



Non-polarisable electrodes, 57, 58 

 Non-living, the, 120, 155 

 Nuclear disc, 115 



membrane, 109, 112, 114 

 poles, 105, 106 

 Nucleo-protein, 138 

 Nucleus and nucleolus, 107, 108 et 



seq., 114, 115, 189, 211 

 Nutrition or conductivity ? 178 

 Nuts and seeds, secretion of, 26 et 



seq. 



Nux vomica, effect of upon con- 

 duction, 140, 159 



O 



OHM'S law, 179, 198, 231, 245 et 



seq. 



Ohm's law and solutions, 250 

 Oil-glands of the orange, 12 

 Onion, the, 14, 18, 19, 36, 60 

 Oospheres, 112, 119 

 Optic axis, 224 



Optic nerve, fibres in, 220 



Ora serrata, 222 



Orange, the, 12, 21 



Osmosis, 10, 138 



Ovule of gymnosperm, 124 



Ovum, 111 



, fertilisation of, 119 

 , segmentation of, 110 



Oxygen, intake of, 43, 183 



PALMS of the hands, 56, 65 



Pancreas, secretion of, 133 



Parallelogram of forces, 174, 177 



Paralysis, muscular, 180 



Parsnip, the, 13 



Particles, electrical, 90 



Passiflora, sense of touch of, 130 



Paton, Noel, 147 



Pear, the, 10, 36 



Peel of fruits, 6 



Pender, xxvi 



Perilymph, 229 



Perineurium, 75, 162 



Peripheric nerves, 75, 76 



Persistence of vision, 221 



Personal capacity, 57 



Peters, 132 



Phalaris, sense of light of, 130 



Phaseolus multiflorm, 120 122 



Phillips, 226 



Pigment cells, 221, 227, 228 



Piper, experiments of, 98 



Plain muscle, 99, 101, 144, 178, 184, 

 et seq., 203 



Plane of Hensen, 151 



Plants grown in pots, 7, 9, 40 

 in dry climates, 133 

 , how electrified, 8 

 resting, 37 



Platinum, secondary action of, 7 

 Plexus of Auerbach^ 167 

 Plexuses of involuntary muscle, 167 

 Pneumonia, 254 

 Poisoning, vegetable, 277 

 Polar bodies, 110 



regions, 276 

 Polarisation, 35, 36, 67, 68 

 _Polarity, difference of in hands, 61 



et seq. 



Pons varolii, 171, 215 

 Positive and negative, 82 

 Potato, the, 15 



Potatoes, experiments with, 40 

 Power of taste and smell in plants, 



128 



Preece, xxv, 91 



Primary or secondary cells ? 86 

 Pronuclei, male and female, 110 



