„ 19. Apparatus to show capillary attraction of soils for 145 water Plate, figure 20. Apparatus for determining coefficient of 148 evaporation, to face Figure 21. Method of Heinrich 150 „ 22. Method of Welitschowsky 162 „ 23. Ground plan and vertical section of lysimeters and 166 vaults showing position of the apparatus Plate, figure 24. Deherain’s apparatus for collecting drainage 168 water, to face Figure 25. Knop’s silt cylinder 190 „ 26. Siphon cylinder for silt analysis 191 „ 27. Bennigsen’s silt flasks 195 „ 28. Nöbel’s elutriator 208 „ 29. Dietrich’s elutriator 209 „ 30. Masure’s silt apparatus 211 „ 31. Schöne’s elutriator 212 „ 32. Schöne’s elutriator outflow tube 213 „ 33. Schöne’s elutriator, arrangement of apparatus 214 „ 34. Schöne’s apparatus for silt analysis, modified by 221 Mayer „ 35. Hilgard’s churn elutriator 226 „ 36. Improved Schöne’s apparatus with relay 228 „ 37. 257 Plate, figure 38. To face 264 „ figures 39–44. „ „ figures 45–50. „ „ figures 51–56. „ Figure 57. Machine for making mineral sections 267 „ 58. Thoulet’s separating apparatus 272 „ 59. Harada’s apparatus 275 „ 60. Brögger’s apparatus 276 „ 61. Apparatus of Wülfing 277 „ 62. Schloesing’s soil-tube for collecting gases 291 „ 63. Schloesing’s apparatus for collecting gases from soil 292 „ 64. Schloesing’s apparatus for determination of carbon 293 dioxid „ 65. Knorr’s apparatus for the determination of carbon 338 dioxid „ 66. Bernard’s calcimeter 339 „ 67. Smith’s muffle for decomposition of silicates 381 „ 68. Apparatus by Sachsse and Becker 401 Plate, figures 69 and 70. To face 480