904 



Rubigo. See also Mildew. 



Ruellia. Intumescence 448 



Ritinex acetosella 147 



Indication of a scarcity of lime. 237 



Running out of potatoes 2o8-2or) 



Rupture of fleshy parts of plants 2>2i-24 



Rust 44 



Rust, Black, of coffee 230 



— White, of tobacco 690 



Rust of the plum 166 



Rust rings in fruit due to frost 5-23-^4 



Rusting of the peel of fruit 1 70 



Rusts of sugar cane 696 



Sabre growth 474 



Saccharogensis diabetica 55 



Saccliaroiiiyces Lndzvigii, Hans 855 



Saccharomvcetes 100 



Saddle grafts 831 



St. Elmo's fire 488 



St. John's bread tree. Swellings 339-40 



Salix arenaria. L 150 



— ciiicrea 98 



— herhacea 84 



— reticulata 84 



— ser/^yllifolia 76 



Saltpeter. See Nitrate of soda: Chile 



saltpeter. 



Sak'iiiia fiatans 11 



Sambucus T05 



Sand, Drifting I49 



— Ferruginous 251 



— Shifting. Efifect 470 



Sand in horticulture . . . r 261 



Sanding of moor soil 256 



Sandstone, Humus 243 



Sapocarbol 760 



.Saprophytism 12 



Satiircja hortensis 74 



Saxifraga cermia 76 



Scab of edible roots 367-72 



— of grape-vines 596-98, 601 



Scarification wounds 776-81 



Schizomycetes 62 



Sciadopytis. Nanism 144 



Scion in grafting, Mutual infiuencc of 



stock and 841-47 



Sclcrotinia Libcriinia 28 



Scoroglia 53 



Scurvy, Bark :i,72 



— Deep, of potatoes 430 



— Knotted 367 



— Surface, of roots t,6-j 



Scurvy diseases Z^l'l^ 



— from marling 370 



— of edible roots 367-72 



— spots in trees 461 



Sea level. Efifect of elevation above.. 72-86 



Sea water. Inundation 192 



Secca molle 202 



Secretions of the root body 139, 270 



Sedum acre 75 



— album 75 



— hexangulare 75 



Seed. Automatic regulation of depth of 



sowing 113 



Seed. Burning 186 



— Candying 226, 387 



— Change , 39 



' — Coating. See Candying. 



— Covering 109 



— Cracking, due to sunburn 647-48 



— Depth of sowing no, 113 



— Germination in ice 499 



— Germination in the fruit 321 



— Hard shelled condition 115, 420 



— Heaving due to frost 536-37 



— Higher germinating power 125 



— Injury from self-heating 652-53 



— Mechanical treatment 106-7 



— Over-fertilization 387-89 



— Quality decisive in germination. .. in 



— Retention of germinating power.. .107 



— Soaking 106, 112, 157-58, 295 



— Souring 201-203 



— Sterilization in beets 225 



— Swelling 106 



— Too deep sowing 106-20 



— Weakness due to age T08 



Seed, Dormant, Germination 109 



Seed time. Efifect of postponement. .639-41 

 Seeding, Delayed 200-201 



Susceptibility to parasitic 



attack 200-201 



— Too thick 147 



Seeds. Specific gravity 295 



Seeds, Hard, in the Leguminosae 420-22 



Soaking in sulphuric acid 421 



— Weak. Behavior 295-96 



Selection, Artificial 665 



Self-heating. Injury to seed 652-53 



Self-preservation in the organism 6 



Self-purpose in the organism 6 



Self-sterility in fruit 291 



Senility. Degeneration 34 



Sepedouiuiii (chrysost'ennum?) 204 



Scrch disease of sugar cane 85, 692-96 



Serum therapy 23 



Sewage 392 



Sewage disposal beds 364-67 



Attraction to crows 364 



Injury from coating with 



ooze and mud 366 



Rats as pests 264 



Sodium chlorid content ....750 



Sexual organs in Cryptogams 289 



Shade. Efifect on amount of harvest.. 657 



— Effect on hops 283 



Shade trees in cofifec plantations 657 



Shading .411; 657-62 



Shadow pictures due to excessive light. 673 



Sheath growth 92 



Shelling of the grape blossom 354-56 



Shikuyobyo of the mulberry 690 



Shoots. Dropping I34 



Shrivelling disease of the mulberry. .690-92 



of tea 692 



Silicates, Ferric 251 



Silpha atrata 364 



Silt. Covering of soil 191 -94 



Silver-leaf 285-86 



Silver-leaf due to lack of calcium 286 



