484 



lyDEX 



Service berry, hairy covering of leaf of, 213. 



Setchell, acknowledgement to, x. 



Sewage, purification of, 381, 382. 



Shade plants, 344. 



Shamel, work of, 434-439. 



Shells as fertilizer, 151. 



Shoot. See Stem. 



Sidewalks ex<'lude air from roots, 126. 



Sieve tnl)e.s, 227,* 231,* 232,* 2:;(j,* 2.'.4, 2.J.J. 



Silage, 387, :!8y. 



Silica, 145. 



Silt, 118. 



Silver grain. See Medullary rays. 



Silver nitrate, 158. 



Simple nits, 227,* 232.* 



Size, increased by breeding, 410, 411.* 413,* 



416,* 422, 423.* 

 Sleep position of flowers, 294, 295. 



— — leaves, 218.* 

 Smallpox, 379. 

 Smut, 397-401. 



Smut of Corn, 397, 398,* 399,* 4U0, 440. 



Smut of Grain, 400-401. 



Smut, Stinking, 400. 



Snapdragon, flower of, opened by bees, 3()S. 



protection of pollen by, 294. 

 Snow as mulch, 117. 

 Snyder, on fertilizers, 153. 



— foods, 173, 178. 



Soap for softening bark, 24S 

 Soda for softening water, 151. 



in soils, test for, 158. 

 Soda-water dissolves marble, etc, 141. 

 Sodium chloride. See Salt. 



nitrate as fertilizer, 148, 153, 1.'4. 



— plant selects nitric acid from, IGl. 

 sulphate in soils, 158. 



— test for, 158. 



Soil, absorption from, 103-162. 



affects the distribution of plants, 351, 

 action of rain on, 111-113, 129. 

 aeration of, 126, 128. 

 air in, 30, 37,* 38, 39,* 40, 103, 119.* 120,* 



124-126, 128, 130, 132. 

 alkiLli, ir.7-l.'J9. 

 iilluviiil, 109. 



as a laboratory for preparation of plant- 

 food, ]4G. 

 as a spiJiiKe, 146. 



Soil as a storehouse of plant-f(nMl. 146. 

 burial of seeds in, 69, 70. 

 capillary action of, 116. 

 chemical action in, 144-153, 

 classified, 108. 

 clayey, 106. 

 color of, 107, 108, 155. 

 composition of. 104, 105. 

 contactof, with -^eed, 21. 

 crust of, 116, 117, 125, 126,* 127, 129. 

 drainage of, 40. 

 drift, 109. 



evaporation from, 115. 

 exploration of, by roots, 133-135. 

 formation of. 109, 110. 

 heart of, 107. 

 heat absorbed by, 43. 



— retained by, 43, 



humus in. 104, 107, 132. 133, 145, 148, 3.-.I. 



— ~ test for, 155. 



injured by over-irrigation, i:'.l. 



— — tilling at wrong time, 129. 

 lifts water, 114. 



lime supplied to, 151. 



— in. test for, 157 

 mechanical analysis of, 104. 

 mellow, 107. 



mineral substances in, 136-160. 

 nitrogen supplied to, li7~150. 



— in, test for, 155, 

 of arid regions, 146. 

 phosphorus supplied to, 150. 



— in, test for, 155, 156, 



physical condition of, 115,* 110,* 117,* 

 119,* 120,* 124, 125, 126,* 127,* 12S,* 

 129-133, 384. 



potash supplied to, 152. 



plant-food in, 136-160, 201. 



puddled, 125, 129. 



required by cuttings, etc.. 108, 262. 263. 



salts in, 136-160, 



sandy, 105, 



saturated, 118. 



sour, sweetened by lime, 152. 



temperature of. 43. 



lests for, 155-160. 



texture of. See Soil, Physical roiidition 



uf. 



tilth of. See Soil, Physical condition of. 



