38.(Pg. [17]) What examples can you give?
39.(Pg. [17]) How are drops of rain and of dew said to be formed?
40.(Pg. [18]) What is meant by a capillary tube?
41.(Pg. [18]) What effect does attraction produce when these are immersed in water?
42.(Pg. [18]) What is the reason that the water rises to a certain height only?
43.(Pg. [18]) Give some familiar examples of capillary attraction.
44.(Pg. [18]) In what does gravitation differ from cohesive attraction?
45.(Pg. [18]) What causes bodies near the earth's surface, to have a tendency to fall towards it?
46.(Pg. [19]) What remarkable difference is there between the attraction of gravitation, and that of cohesion?
47.(Pg. [19]) In what instances does the power of cohesion counteract that of gravitation?