895 



Flower pots. Washing 205 



Flowering organs, Dropping 353 



]"lowers, Green 342 



Flying ashes 738, 741 



Fodder beets. Root blight 220-26 



Fodder peas. Lodging 665 



Fog 458-60 



Fog. Effect on cotton 458 



— Protection against frost 511 



Foliage. Injuries 879-80 



— Perforation .....427, 430-3^, 444. 449 



— Premature drying 284-85 



— Yellowing due to frost 554 



— Yellowing in camellias due to ex- 



cess of light 671 



Foliage, Older. Behavior with acute 



frost action 524-26 



F"ood concentration. Increase 360-87 



Food stuffs. Relation to the soil struc- 

 ture 264-74 



Fool's-head formation in hops 342 



Forest litter 186-87, 270 



Forest trees. Crotch canker 593-Q4 



Isolation 2,2-j 



Forestration. Advisability 8q 



Forests ". . . . 134-37. 187-88 



— Use as protection 1 50 



"Forks" of grapes 345-46 



Fox of the hop 282 



Freezing back of older branch tops.. 553-55 



— of heavy soil 235 



— to death 504-7 



Frenching disease of toliacco 685 



Friability, Dependence of tillage on 194 



Frost. Attack on immature growth ... .554 



— Behavior of beets 531-32 



— Behavior of cabbage plants 531-32 



Frost, Acute. Effect on foliage 524-26 



— Black 537 



— Experimental production of par- 



enchyma wood h\ 617-20 



— Late. Damage 136, 432 



— Protection by fog against... 511 



— Protective measures against ... .624-30 



— Susceptibility of moor vegetation 



to ..251-53 



— Theory of the mechanical action 



of 620-23 



— Varieties hardy to 500, 631 



Frost action. Effect on roots 562-66 



Special cases 5 14-637 



• Theory as to nature 507-13 



— • blisters 524, 532-34, 5^9-74 



— boils of cherries 572 



— canker 583 



— causing cambial browning 612 



cell membrane loosening, 581 



cell passages 613 



changes in blossom organs. .518-23 



crippling phenomena 508 



damage 136, 432 



deficient greening of younger 



foliage 526-27 



defoliation 347, 527-31 



differences in tension 514 



drying of cherry trees 555-58 



Frost causing dying of twigs 154 



excessive chilling 508 



— — f asciation 559 



— — heaving of seeds 536-37 



injury to bud cushions 577 



injury to spring growth 559 



internal injuries to the grain 



stalk 539-41 



internal injuries to the young 



grain 537-41 



internal splitting of trunk and 



branches 581-83 



• leaf blight of conifers 883 



medullary ray displacement. .. .571 



movement phenomena 547-53 



running to seed of beets 516-18 



rust rings in fruit 523-24 



— — splitting of leaves 534-36 



stalk lodging 542 



super-cooling 508 



■ wilting 549-51 



yellowing of foliage 504, 554 



— clefts 566-69 



— curve 630 



. — danger in sandy soil 149 



— holes 197 



— line 579-81 



— plates 609 



— prediction 630-31 



— ridges 566 



— tears. Internal 569 



Open 583-85 



— wounds in conifers 489-93 



— wrinkles 574-75 



Frosting 504-7 



Fruchtkuchen 338, 339 



Fruit. Cork formation 432-34 



— Dropping 296 



— Hardy varieties 631-33 



— ]\Iealiness 166-68 



— Ripening, Premature 166 



— Rust rings due to frost i-2)-2\ 



— Rusting of the peel 170 



— Seedless 292-95 



— Self-sterility 291 



— Sprouting .■ ■. 375 



— Watery taste 2,2:*, 



Fruit cushio-ns. See Fniclifkitcheii. 



— spurs. Casting 338 



— trees. Crotch canker 593-94 



Root grafting 840 



— varieties. Advantages of pure 



planting 295 



for dry soils 174-75 



Fruits. Double 376 



— Sunburn 645-46 



Fiiligo z'agans 56 



Fuiiiac/o saliciiw, Tul 710 



Functioning. Maximum degree 9 



— Minimum degree 9 



- — Optimum degree 9 



Fungus marinus 53 



— .panis siiiiilis 53 



Furrowing in heavy, soil 234 



Furrows, Open 235, 511 



Fusarium .' . 204 



