4o8 



Index of Subjects 



Pied varieties, relation to whole-coloured 



84 

 Pigs, colour 42 

 PIGEONS 



colour 43, 309 



fantail 36 



nun 36 



reversion 100 



sex-limited descent 194, 319 



shell 36 



webbed foot 36 

 Pigments 



of horses 125 



of mice 116 

 Pisnm sativum, see Peas, edible 

 Plant-characters 14 

 Plastid colours 95, 98, 204 



white dominant to yellow 134 

 Polarity of zygote cell 315 

 Polemonium 40 

 Pollen grains of sweet pea 2S, 91, 150 



figured 150 

 POLYDACTYLISM 



cat 34 



fowls 35, 228, 255 



guinea-pig 34 



imperfect dominance of 53 



man 228 

 Polyzoa 275 

 Poppies 39, 200, 24 T 

 *• Porcupine men " 219 

 Porokeratosis 220 

 Potato 307 



Practical hints 231, 291 

 Pre-Mendelian writings 5 

 Presence and absence, hypothesis of 54, 



65, 76 



bearing on pathology 232 

 Prickliness 21 

 PRIMULA 40, 309 



colour in F-i 72, 294 



colour in Fi from two whites 105 



coupling 315 



crossing 294 



dominant and recessive whites 105 



double 31, 199 



heterostylism 27, 68, 295 



"lavender" 299 



palm-leaf and fern-leaf 24 



special phenomena of colour in 138 



stellate and imbricate petals 26, 236 



striping 312 



white-edged flowers 138 

 Pseudo-hypertrophic muscular paralysis 



222, 225 

 Ptosis 222 



Puccinia gliimarum 2^^, 233 

 " Pure lines " of Johannsen 239 

 Purity of type 



critical meaning of 17, 291 



how produced by Selection 129 



of germ-cells 146 

 Pysaera 310 



RABBIT 



Angora hair 33 



Belgian hare 119 



colour 41 



a dominant pied form 86 



Dutch-marked 84, 85, 142, 237 



"English" pattern 41, 86, 239 



Himalayan iii, 123 



interrelations of colours 75 



lop-eared 251, 323 



sex statistics 193 



toitoiseshell 117 



yellow 116 

 Ranunculus arvensis, fruits 21 



„ ficaria 329 



Ratios in F^ 



9 : i^ : 4 explained 77, 80; i^ : 5 :i, 78; 



9:7, 89 ; 18 : 18 : 6 : 6 : 16, 40 ; 



27 :9 : 28, 91 



aberrant 252, 318 



various 79, 311 

 RATS 



colours 41 



*' ghost "-markings in albino 145 



hooded 85 



Irish colour 85 



no yellow known 116 

 Recessive characters 8, 342 



recognition of 232 



in man 225 

 Reciprocal crosses giving different results 



167, 174, 186, 203, 323 

 Re-combination 



novelties through 60 



source of new breeds 71 

 Red Indians 209 



Reduplication in gametic series 318 

 Repetition of Parts and Heredity 275 

 Repulsion 151, 155, 314 

 Retinitis pigmentosa 225 

 REVERSION 

 nature of 99, 278 



fowls 103 



mice 99, III 



orchids 96 



pigeons 100 



stocks 95 



sweet peas 89 

 Right- and Left-hand edness 48 

 Rogueing crops 292 

 Round seed 28 

 Rust disease 25, 233 



Salix 249, 385 



Salvia 41 



Sap- colour 98 



Saturation of colours 80, 143 



Seasonal forms 257 



Seed shape peas 14 



character 15 



maize 30 

 Seed skin, Pisum, colour of 14 

 Segregation 7, 10, 11, 13 



