XIV LIST OF EXPERIMENTS 



33. Expt. 42. The Gapacity of the Lungs . . 86 



34. Expt. 43. The Level . .. . ."'. . 89 

 Expt. 44. Water Seeks its own Level. Size 



of Drops . . . . . 90 



35. Expt. 45. Porous Bodies Absorb Water . 92 

 Expt. 46. To Make Porous Bodies Waterproof 93 

 Expt. 47. Filtration . . . . . 93 



36. Expt. 48. Solution and its Oddities ., : v 95 

 Expt. 49. The Use of Gasolene and Alcohol 



as Solvents . . . . 97 



37. Expt. 50. Crystallization . . ., . 98 



39. Expt. 51. Hard and Soft Water. Soap . 103 



40. Expt. 52. The Effect of Water upon Seeds 



and Plants . . . .106 



41. Expt. 53. Examples of Capillarity . .. 107 

 Expt. 54. How Water is Held in the Soil . 108 

 Expt. 55. Capillarity in Plants . /.. . . 110 



42. Expt. 56. The "Pocket Garden" .-; . . 113 



43. Expt. 57. Germination Tests . . . 114 



44. Expt. 58. The Proper Depth of Planting . 116 



47. Expt. 59. A Flower Collection . . .122 



48. Expt. 60. A "Tree" Collection . ,. . . 125 

 Expt. 61. Planting Tree Seeds . . .126 



49. Expt. 62. Fermentation . . . 128 

 51. Expt. 63. How to Preserve Milk . . . 131 



58. Expt. 64. Measurement . . . ,. 153 



59. Expt. 65. Making a Balance and Weighing 156 



60. Expt. 66. Displacement of Water by Solids 



and Air . 159 



61. Expt. 67. Density - 161 



62. Expt. 68. Blue Prints from Tracings . * 163 



