Index 
Peach, Prunus, LIT, 212, 302, 305 
Peach-borer, 158 
Pear, effect of sun-scald, 68; time 
for pruning, 111 
Pearl Bush, Eaochorda, 327, 348, 360 
Pecan, Hicoria, 256 
Pendulous (form), 208 
Pepperidge, Nyssa, 212, 291, 371 
Perennial herbs, 373 
Persimmon, Diospyris, 172, 212, 285 
Philadelphus, Mock Orange, 192, 
328, 344, 354, 379 372; 373 
Phosphoric acid in soil, 62 
Phylloxera, 148 
Physiological disease, 56 
Physocar pus, see Spirea 
Picea, Spruces, 209, 215, 228, 240, 
242, 243, 244,” 366, 371, 373 
Prerts, 328, 333, 334, 366, 368-371; 
see also Andromeda; Xolisma 
Pine, Pins, 25, 156, 165, 171, 189, 
193, 195, 203, 210, 214, 231; 
Bhutan, 234; Black, 237,* 238, 
240, 259; 371, 372; Bull, 240; 
Calabrian, 238,* 239; Cluster, 
240; Corean, 232," 234; Dwarf, 
240; Greek, 233,* 234; Jack, 239, 
371, 372; Longleaf, 239; Mexican 
White, 234, 235; Northern Pitch, 
239; Red, 2393; Scotch, 236,* 250, 
372; Shortleaf, 240; Silver, 234; 
Spruce, 240; Sugar, 234; Swiss 
Stone, 234; Table Mountain, 239; 
White, 37, 60, 66, 231, 233; Yel- 
low, 234; Australian, Corsican, see 
Pine, Black; Gray, see Pine, Jack; 
Norway, see Pine, Red 
Pine-apple, 48; see also Galls 
Pine-bud worm, 166 
Pine-twister, 166 
Pinetum, 214 
Pinus, Pines, 210, 214, 231, 232," 
233," 234, 235," 236," 237, 238," 
239, 240," 259, 371, 372 
Pinxter, 331 
Pirus, Apple, 212, 294," 295,* 296,* 
297," 298," 366-369 
Pith rays, 14, 17 
Plane-tree, Plaianus, 68, 212, 208, 
300 
Plant-lice, 134, 141, 148, 150 
Planting too deep, consequence of, 
58 
387 
Platanus, Sycamore, Plane-tree, 212, 
298, 299, 364, 370, 371 
Plum, Prunus, 151, 158, 212, 302; 
Beach, 305; Japanese, 304,* 366, 
368; Yellow, 305; Chickasaw, see 
Plum, Yellow 
Podocarpus, Yew, 210, 247 
Poisons, for combating fungi and 
insect pests, 125, 133; injurious to 
plants as well as to animals, 134; 
for biting-insects, 135; see also 
Arsenate of lead; Bran; Insecti- 
cides; Paris Green; Soap solution 
Poisonous trees, 261 
Polypodial type, 204 
Pope’s Hat, Evonymous, 359 
Poplar, Populus, 16, 28, 58, 65, 60, 
103, 150, I5I, 154-156, 158, 161, 
163, 105, 171, 212, 300, 365, 366, 
370-372; Balsam, 301; Lom- 
bardy, 301; Silver-leaf, 301 
Poplar, Yellow, Liriodendron, 212, 
288, 370 
Poppelsdorf Allee, Bonn, tree guards 
in, 118 
Populus, Poplars, 212, 300, 301, 365, 
366, 370-372 
Potash, deficiency in soil, 62 
Potash fertilizers, 149 
Potato-beetle, 156 
Praying-mantis, 151 
Pride of Rochester, Dezizia, 353 
Privet, Ligusirum, 192, 328, 343, 366, 
369-372 
Privet Andromeda, Xolisma, 335 
Protective coloration, 131 
Pruning, natural, 13, 33; in rela- 
tion to light intensity, 25, 26; 
to replace lost parts, 27; for frost- 
killing, 65, 67; in late summer, 66; 
to establish equilibrium between 
root and crown, 82, 101; to pre- 
vent location of fungus spores, 86, 
124; outfit and method, 87, 88; 
distinguished from trimming and 
heading in, 87; dressing of wounds, 
89; healing process, 91; depending 
on food elaboration, 98; most diff- 
cult task, 102; varieties of form, 
103; A. Des Cars’s book on, 105 
note; rules for form, 107; tools, 
108; for flowers or fruit, 110; 
effect of severe, 111; repairing of 
