_Lecture I._ Introduction . . . . . . . . . 1 General Properties of Liquids . . . . . . 2 Properties of the Surface Skin of Water . . . . 3 Elastic Skin of other Liquids-Minimum Thermometer . . . 5 Boundary Surface of two Liquids . . . . . . 6 Area of Stretched Surface . . . . . . . 7 Shape of detached Masses of Liquid . . . . . 8 Production of True Spheres of Liquids . . . . . 10 The Centrifugoscope . . . . . . . . 14 Effect of Temperature on Sphere of Orthotoluidine . . . 15 Other Examples of Equi-Density . . . . . . 17 Aniline Films or Skins . . . . . . . 19 Surface Tension . . . . . . . . 21 The “Diving” Drop . . . . . . . . 22 Formation of Falling Drops of Liquid . . . . . 24 Ascending or Inverted Drops . . . . . . 31 _Lecture II._ Automatic Aniline Drops . . . . . . . 33 Automatic Drops of other Liquids. . . . . . 37 Liquid Jets . . . . . . . . . 38 Liquid Columns . . . . . . . . 40 Communicating Drops . . . . . . . . 44 Combined Vapour and Liquid Drops . . . . . 47 Condensation of Drops from Vapour . . . . . 49 Liquid Clouds in Liquid Media . . . . . . 54 Overheated Drops . . . . . . . . 55 Floating Drops on Hot Surfaces . . . . . . 57 _Lecture III._ Spreading of Oil on the Surface of Water . . . . 60 Movements due to Solubility . . . . . . 63 Movements of Aniline Globules on a Water Surface . . . 63 Movements of Orthotoluidine and Xylidine 1-3-4 on a Water Surface 66 Production of Globules from Films . . . . . 68 Network formed from a Film . . . . . . 70 Quinoline Rings . . . . . . . . 71 Expanding Globules . . . . . . . . 71 Attraction between Floating Globules . . . . . 73 Analogies of Surface Tension Phenomena with Life . . . 75 _Conclusion_ . . . . . . . . . 76 _Appendix_ Apparatus and Materials required for Experiments on Drops and Globules . . . . . . . . 78 _Index_ . . . . . . . . . . 81