[Frost and fire : natural engines, tool-marks and chips : with sketches taken at home and abroad by a traveller] . The principle might be extended. A boat with plate glasswindows beneath the water line would make men and fishstill better acquainted, by bringing them face to face. Theman would be in the cage, and the cage might be in a salmonpool where fish are free. If air in a hothouse be a miniature atmosphere, w^ater in aglass tank is a working model of a sea, and heat and cold maybe set to work the model engine at home. Let one of the common fish-tanks be half filled withclear water, and p
[Frost and fire : natural engines, tool-marks and chips : with sketches taken at home and abroad by a traveller] . The principle might be extended. A boat with plate glasswindows beneath the water line would make men and fishstill better acquainted, by bringing them face to face. Theman would be in the cage, and the cage might be in a salmonpool where fish are free. If air in a hothouse be a miniature atmosphere, w^ater in aglass tank is a working model of a sea, and heat and cold maybe set to work the model engine at home. Let one of the common fish-tanks be half filled withclear water, and placed wdiere the sun may shine upon it. Float a few lumps of rough ice at one end, and sink ablack stone at the other; and, when the water has settled, WATEK. 69 pour milk gently on the ice. An ounce to a gallon serves thepurpose. Milk consists of small white vesicles and a fluid, and,bulk for bulk, milk is heavier than water. So at first thewhite milk sinks in the clear water, and spreads upon thebottom of the tank, leaving the dark stone like a sunkenrock in a muddy sea, or a mountain top peering over a low
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Keywords: ., bookpublisheredinburghsn, booksubjectgeo, booksubjectmeteorology
