340 



INDEX. 



Oak, 118 



Oil injurious to trees, 129 



Oily seeds, 12 



Onions, soil for, 83 



Ononis, 117 



Ovary, 212 



Over-production, its consequences, 



311 

 Oxalis spnsitiva, 105 

 Oxide of iron, its effect on roots, 



313 

 Oxyofen required for germination, 35 

 proportions necessary, 36, 



41, 45 



appli d to roots, 55 



moist earth absorbs, 55 



quantity al>sorbed, 5(i 



absorbed by roots, 60 



inhaled by the stem and 



branches, 130 



essential to flowers, 189 



quantity the}' absorb, 190 



Packing seed, 33 

 Papaver rhceas, 120 

 Parenchyma, 127 

 Parslev seed, 14 



canker, 296 



Parsnip, 87 



Peach, stocks for, 158, 161 



thinning, 311 



Pearmain, 332 

 Peas, early, 16 



to preserve, 328 



Peat, its value as fuel, 226 



soil, 331 



Peculiar juices, 165 

 Peiresc, 4 



Pelargonium spotting, 296 

 Peony seed, 1 5 

 Pericarp, 185, 212 



its office, 214 



Petals, 185 



their use, 187 



Phoenix dactilifera, 191 



Phosphate of lime, 97 



Physiology, its progress, 4 



Pis'tils, 185 



Pith, 133 



Plants, their nature, 245 



constitUv?nts, 247 



functions, 249 



proofs of sensation in, 1 04, 



9n9 



Plethora in plants, 299 



Poa annua, 13, 50 



Pod, 213 



Poisons, their effect on plants, 313 



Pollen, 185 



its use, 192 



quantity necessary, 198 



time it continus good, 198 



analysis of, 200 



essential to fertility, 191 



Polyanthus tuberosa, 325 



Polvgoniim aviculare, 119 



Pome, 213 



Pomona's riuff, 167 



Poppy, 120 



Potato, autuum planting, 21 



Potatoes, deprived of blossom, 52 



ulcers in, 297 



cui'l in, 255 



Pot-culture, 75 



Potherbs, drying, 143 



Pots, their form, 72 



Primula marginata, 320 



Proliferous flowers, 2{i5 



Pruning, 174 



Prunus, various species of, 201 



Pteris aquilina, 113 



Pulp, 127 



Putrefaction, 327 



of manures, 92 



causes heat, 329 



its requisites, 24«") 



Pyrrhine in rain, 34 

 Pythagoras, 3 



Rabbits' urine, 117 



