90I 



Parasites. Wound 15 



Parasites of weakness 15 



Parasitism 12 



Parching of grape vines 283 



Parenchyma wood. Experimental pro- 

 duction by frost action 617-20 



Parenchyma wood aggregations 613-15 



Parenchymatosis 5. 33^ 



Parthenogenesis 178, 342 



Pathogeny 7 



Pathography 7 



Peach buds. Dropping 645 



— rosette 6g8 



— rot 763 



— yellows 697-99 



Peanut diseases 690 



Pears. Lithiasis 170-74 



— Stoniness 170-74 



— Varieties for dry soils 175 



Peas. Intumescence *. 446 



Peas, Fodder. Lodging 665 



Peat, Sphagnum, in horticulture 261 



Peat mulch 265 



Peatrification of the fertilizer 271 



Peaty earth 185 



Pectine 167 



— disease of grapes 284 



— fermenting organisms 272 



— ferments 271 



Peeling of bark by game 781 



Peli-sem of tobacco 685 



Pelargonium. Bud disease 146 



Pelargonium coiialc 438 



Penicillium 14, 327, 766 



Penicilliiiiii glaiicum 13, 204, 451 



Pennischini spicatiiin. Unfavorable 



soil 22,2 



Pentoses 167 



Perforation of the foliage 



• • • -427, 430-32, 444, 449 



Periodicity, Corrective 3>i 



Peronospora viciac 446 



Pestilences, Chart of . - 2t, 



Petalody 372 



Peziza 53 



Peziza Willkoiiiinii 83 



Phalaenofsis ainabilis. var. Riincnsfadi- 



ana. Specking , 261 



Phaseolus 30, 126 



— Effect of lack of calcium 304 



Phenol 460 



Phenomena, Life, at low tempera- 

 tures 498-50(J 



Phenyle, Little's Soluble 760 



Phillyrea. Wind-bending 475 



Philodendron. Grafting experiments. . .838 



Phleom. Circumvallation 867 



Phleum pratense. L 125 



Phoma II, 261 



Plioina Bctae, Frank 222 



Phosphoric acid. Excess 405-6 



— — Lack 300, 312 



Phosphorus. Lack. Efifect 312 



Phragmidium 59 



Phyllachora potiiigcna (Schw.) 170 



Phyllerium Fr 179 



Phyllocactus. Cork disease 4-9 



Phyllody 340-44 



Phyllomorphosis 34i 



Phyllosticta 261 



Phyllosficta Sycophila. Thiim 710 



Phytopathology 7 



— Historical survey 41-/1 



— Periodical literature 66 



Phytophthora 62 



Phytophthora decay of cocoa fruits 462 



Phytophthora infestans 21 



Phytoptus 146 



Picea 105 



Picea cxcclsa. Fasciation 2i3- 



Picoline 460 



Pigment, Red 127 



Pilobolus 54 



Pilosis 177-79 



Pimelea 134 



Pine. Dropping of the needles 349 



— Shedding of the bark 259 



— See also Pinus. 



Pineapple. Failure 650 



Pinosol 760 



Pinus 105 



— Nanism 144 



Pinus montana '. .247, 475 



— sik'cstris 94, 107 



— — f. turfosa 249 



— See also Pine. 



Piricularia Orysea Br. et Cav 315 



Pints coiniuunis 281 



— IMlahis sinensis. Gnarl formation . .381 

 Pissodcs Hcrciniac 723 



— scahricollis 723 



Pistillody . 372 



— in Papavcr soinnifcrnni 372 



Pisum II 



Pisnin satifuin 107 



Pith bridges 577 



— ■ repetition 613 



— spots 613 



Plant coverings. Effect 275-76 



Effect on soils 185-86 



— -diseases. Classification 48 



— -diseases. Constitutional 10 



General 10 



— — Local 10 



— hygiene 71 



— protection 59 



Plan tag alpina 84 



— inaritiina 84 



Planting. Depth 103 



Planting, Autumnal. Precautions 565 



— Too deep 98-120 



— Too shallow 105 



Plants. Burning in moist soil 199-200 



— Check 9 



— Cultural position 55 



— Dormant period 125 



— Etiolation 423 



— Law of inertia 39 



— Peculiarities determined by habit.. 39 



— Power of resistance 18 



— Protective devices against para- 



sites 18 



