VOLUMES ONE TO TWENTY-FIVE. 



189 



SwEDES,experiinents upoii,with remarks on 

 the manures employed (Dr. Voelcker), 

 xix. 153; former experiments (in vol. 

 xvi.) did not malcc it clear wlicther 

 armuonia promotes the swede crop, 

 154; influence of quantity on results, 

 155; phosphatic guanos suit turnii^s 

 best, 15(j ; further experiments to test 

 the influence of ammonia, 157 ; soil of 

 trial-field, its analysis, 158 ; difterent 

 kinds of manure used and grounds of 

 selection, 159 ; results of analysis of 

 bone pbosi:)hate, KiO ; comparative 

 eifect of thing and superphosphate, 

 161 ; gypsum and sulphates of ammonia 

 and potash inoperative, ib. ; sulphate of 

 ammonia perhaps in excess, 162 ; used 

 alone it retards the plant and stunts 

 even leaves, th. ; phosphates in excess 

 benefited the succeeding barley crop, 

 163; table of the influence of .steeps 

 on the germination of tui-nips, 164 ; 

 seed should be kept from contact with 

 its manures, 165 ; field-experiments on 

 swedes in 1857, 167 ; on similar land 

 to that in 18.56, and containing gypsiun 

 and phosphoric acid, 168 ; method of 

 determination, ib. ; table of manures 

 used and crops grown, 170 ; analyses 

 of manures, their importance, ib. ; su- 

 perphosphates of difterent strength and 

 value, ib. ; the same thing under dif- 

 ferent names, 171 ; guano, variations 

 in the samples and results, ib. ; salt 

 mixed with superphosphates may be 

 useful for swedes, 175 ; analysis of a 

 good superphosphate, producing the 

 best crop, 176 ; Iwue-ash mixed with 

 bone-dust by dealers, 177 ; comparison 

 of superphosphate from fine dust and 

 from coarse bones, 178 ; home-made 

 superi^hosphate cheaper and as effec- 

 tual as the best bought samples, 179 ; 

 results from sulphate of ammonia less 

 than " nothing," 179 ; on superphos- 

 phate from bone-ash, ISO ; composition 

 of wool manure, ib. ; poudrette de 

 Bondy, analysis of, 181 ; its ettects as 

 comi)ared Avith those of guano and 

 ■woollen refuse, ib ; summary, 182 ; re- 

 sults unfavourable to ammoniacal .salts, 

 ib. 



, experiments upon, third report (Dr. 



Voelcker J, xxii. 69; lessons from pre- 

 vious trials, 70; exijcriments on 20 

 trial plots, each diftercntly dressed, 

 71 ; table of results, 72 ; manure testi- 

 momal.s„73; experiments in 1850, ib.; 

 composition of soil, ib. ; table of results, 

 75; experimental use of simple salts 

 justified, ib. ; forms of nitrogen used, 



76 ; wide and close planting, 77 ; num- 

 ber of roots grown per acre at difterent 

 distances, 78 ; eff'ects of suiierphospliato 

 on clay land, 79 ; gyi^smu, ib. ; sujier- 

 phospliate, guano, and effect of am- 

 moniacal matters, 80 ; sulphate of am- 

 monia, bone-dust, turnip manure, 81 ; 

 nitrate of soda, 82 ; common salt, 83 ; 

 dissolved bone-ash, ib. ; mistakes as to 

 soluble phosphate, 83 ; boue-asli and 

 sulphate of ammonia, 84 ; sulpliato of 

 potash, ib. ; bone-ash and nitrate of 

 soda, ib. Conclusions : effects on root 

 crops of phosphates, 85; ammoniacal 

 salts, ib. ; nitrate of soda, ib. ; Mr. 

 Campbell's experiments, ib. ; tal)le of 

 results, 86. 



S^WEDES, their manuring and management 

 in different climates (Russell), xx. 491. 



, experiments upon (Dr. Voelcker), 



xxii. 69. 



, on the specific gravity of (G. Mur- 

 ray), xxiii. 361 ; Dr. Anderson's views, 

 ib. ; description of experimental crops, 

 management, and produce, 362-4 ; de- 

 termination of specific gravity of bulbs 

 relatively to that of the juice, 364 ; 

 proper growth of seed, ib. ; the tem- 

 perature tavourable to the growth of 

 roots, 365. 



, on the cultivation of with mangold 



(C. Lawi-ence), xxv. 248. 



Sweet-Potato, see " Potato, sweet." 



Sweet-scented vernal grass, analysis of 

 (Way), xiv. 177 ; description of (Buck- 

 man), xvii. 513 ; how affected by ma- 

 mu'es (Lawes), xx. 256. 



Swingle-trees for equalising draught (P. 

 Love), xvii. 561. 



SwiTZEELANU, ou irrigation as practised 

 in, by H. T. Jenkinson, xi. 607. See 

 " Irrigation " and " Water-meadow." 



Sybray, J., on the use of Lime, iii. 429. 



Sycamoke, the, its j^lanting and manage- 

 ment (Falkener), iii. 271. 



Syenite rock, the, analysed, xiii. 534. 



Tabes mcsenterica (F. Dun), xiv. 126. 

 Tabrum Lichfield, on burning clay, iv. 268. 



See " Clay-biuning." 

 TiENLE, or tapewonns, varieties of 



(Simonds), xxiv. 599. 

 TjVjl-cokn (barley), proportion of, at Piot- 



hamsted, xviii. 468. 

 Talc, analysis of, xiii. 532 ; xvii. 464. 

 Talcose schist, analysis of, xiii. 534. 

 Tall fescue-grass (Buckman), xv. 464 ; 



xvii. 534. 



