Abstract
IN two previous papers,1 I have mentioned that water at ordinary temperature is not a suitable liquid for forming “liquid drops floating on the same liquid surface”. In August 1930, however, I observed at Den Kund (Dalhousie hills), at a height of about 1000 ft. above the sea-level, that water is quite a suitable liquid for easy formation of either primary2 or secondary drops. The life of these drops is also found to be longer. The splashing gives easy formation of secondary drops of quite a long life. The temperature of the water was about 34° F. The surface tension of water at this temperature is 76.53 dynes per cm., and viscosity 0.0179 c.g.s. units.
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