170 
Mouse, Field, disperser, 125 
Mucilage, seeds, 67, 71, 73; 
anchorage and burial, 82 
Mud, disperser, 71-2 
Mullein, Great Yellow, woolly, 
22 
Mustard, seed, germination, 13, 
14, 80 
N 
Nature, definition, 36; — and 
waste, 64 
Nature-students, qualifications, 4 | 
Nature-study, definition, 1, aim 
and objects, 3; rules, 5-7 
Needle-crystals. See Raphides 
Nettle, stings, 27, 28; galls, 
106; fungus, 107 
Nightshade, Enchanter’s. See | 
Enchanter’s-nightshade 
Nitrogen, 12 
Nutrition, 12-18; function, 19 ; 
mutual relations with respira- 
tion and growth, 19 
O 
Oak, rest, 40; galls, 106 
Object of seed-dispersal, 62—5 
Orchis, dispersal, 66 
Ovary, Primrose, Poppy and 
Wallflower, 45 ; Herb Robert, 
114, 118, 120 
Oxygen for respiration, 9-11; 
food-ingredient, 12 
P 
Parachutes, dispersal, 65 
Patrimony of seedling, 60—2 
Pea, Sweet, embryo, 
function of cotyledons, 81 
Perennial Cranesbills, 138, 150, 
155, 162 
Petals, Herb Robert, 
Storksbill, 146-9 
Petiole, Herb Robert, 97 
Petty Spurge. See Spurge 
61; 
112-5 ; 


INDEX 
Phosphorus, 12 
Pine, pollination, 57; wing of 
seed, 66 
Pink, bloom on leaf, 24; germ- 
ination, 80 
Pipes, water. See Water-pipes 
Pistil, forms, 45-6; develop- 
ment, 57-8; Herb Robert, 113 
Plantain, mucilaginous seed, 82 ; 
Hoary, leaf rosette, 37 
| Poisonous plants, 30 
Pollen, where found, 45; trans- 
ference, 48-56 ; maturing, 52, 
53; Herb Robert, 113-4; 
Cranesbills, 141 
| Pollen-tube, Herb Robert, 114 
| Pollination, 44—56 ; cross-, 50-3 ; 
self-, 48, 53-6; Herb Robert, 
115, 117-8; Cranesbills, 139, 
162; Storksbill, 149-50, 162 
Poppy, pistil, 45; stamens, 47 ; 
pollination, 51; dispersal, 66 ; 
closing of fruit, 67; Yellow 
Horned. See Horned-poppy 
Pores, 11; Herb Robert, 95-6 
Potato, starch, 15; tubers, 44 
Prickles, Rose, 27; uses, 37 
Primrose, pistil, 45 ; self-pollina- 
tion, 54; food of Yellow- 
underwing, 104 
Propagation, vegetative, 43 
Protection, 22-39, 137; from 
elements, 22-5; from living 
things of other kinds, 25-34 ; 
limits of, from being eaten, 
25-6; seedlings, 31-3; in 
mutual competition, 34—9 
Proteids, 12 
Q 
Qualifications, 
dents’, 4 
Nature - stu- 
R 
Radicle, anchorage, 80; Scabious, 
86-7 
Ragged Robin, maturity: of 
