INDEX 



259 



Nucleoplasm, 90 



Nucleus and nucleolus, 13'i 



investigation by mierodisseetion, 241 

 translocation and its related 

 phenomena, 133 



Oenothera, meiosis in, 203 

 gigas, polyploidy in, 224 

 rubricalyx, megaspore development 

 in, 206, 207 

 Oogenesis and yolk formation, 144 

 mitochondria in, 131, 145, 146, 152, 

 153 

 Opacity and optical density, 68, 69 

 Opalina, mitochondria in, distribution 

 of, 125 

 form and structure of, 127 

 Osmiophilic platelets, 168 

 in plant cells, 102 



Paludina, acrosome in, 142 



granular acrosome in, 110 

 Pancreas, histology of, 12 

 Pannus, slit-lamp appearances of, 75 

 Paratncecium, dstribution of mito- 

 chondria in, 125 



neuromotor apparatus in, 156 

 Parathyroids, histology of, 25 

 Paris quadrifolia, chromatic filament 



in, 179 

 Patella, nucleolar emission in, 138 



yolk formation in, 122, 145, 146, 147, 

 148, 152, 153, 154 

 Periplaneta americana, oogenesis of, 

 Golgi elements in, 94 



niicleolar emission in, 136, 146 

 Pituitary, cellular composition of, 22 



chromophobe cells of, 23 



types of granules in, 23 

 Plant cells, osmiophilic platelets in, 102 

 Plasma cells in blood, 13 

 Plasmatic microsomes, 193 

 Plasmodiophora, nuclear phenomena in, 



188, 191 

 Plasmosome, 90, 182 

 Plastidome, 169 



in plants, 99 

 Platelets, blood, origin of, 16, 17 

 Polyploids, higher, 229 

 Polyploidy, 223 



as source of species and horticultural 

 varieties, 233 

 Post-nuclear bodies, formation and 



origin of, 143 



Protomitosis, 188 

 Protoplasmic cell-inclusions, 91 

 Protozoa, contractile vacuoles and their 

 relation to Golgi apparatus, 114, 

 115 

 mitochondria of, 158 

 neuromotor system of, 154 et seq. 

 Pseudochondriome, 169 

 Pseudopodia, 16, 17 



Reflection from polished surfaces, 53 

 specular, alteration of axis of, 60 

 of cornea, 56-61 

 " Relucency," definition of, 3() 

 Reticular cells, 19 

 Reticulo-endothelium, 18 



changes in Hodgkin's disease, 19, 20 

 Retroillumination, 38, 64-69 



and direct illumination, simultaneous 

 comparison for localisation of 

 depth, 71 

 dissimilarity of binocular images 



under high magnification, 70 

 light for, focusing of, 68 

 of vacuoles in lens-cortex and cornea, 

 65, 66 

 Retting of flax fibres, process of, 253 



Sarrorirrus, nucleolar emission in, 138 

 Salivary glands, Golgi apparatus in, 112 

 Sclerotic scatter, method of, 38, 63, 64, 

 75 

 nebula of cornea as seen by, 75. 76 

 Secretory cycle, relation of Golgi 



apparatus to, 111 et seq. 

 Sex-chromosomes in heterophytic 

 angiosperms, 221 

 in plants, 218 

 Sexual function, adrenals and, 27 

 Shadow streaks, production of, 52 

 Slit-lamp exam nation, direct illumina- 

 tion in, 47, 48, 63 

 Gullstrand, 39-42 



adjustment of, 43 

 methods of illumination with, 63 

 microscopy of eye, range of 

 magnification in, 73 

 Skin, histology of. 6 



intra-cellular fibrils of, 6 

 keratinisation in, 6 

 mitochondria in, 6 

 pigment in, origin of, 7 

 Sorosphcera, nuclear phenomena in, 191 

 Specular lustre in lens-cortex, 62 



reflection of an incident slit-beam, 58 



