Water Telescope
June 30th, 2007 by admin
CRAFTS
To study the animal life under the surface of a clear and shallow lake, a water telescope is a great aid. It is simply a wooden box a foot or so long and open at both ends.
The inside should be painted black to prevent cross reflection of light.
A square of clear glass should be fitted into one end and puttied tight to keep out the water.
To use the water telescope, we simply shove the glass end under water and look into the box. A cloth hood or eye piece to keep out the outside light will make it more effective.
The best way to use a water telescope is to lie in the bottom of a boat which is drifting about, and to look through the telescope over the side. As you study the marvelous animal and plant life that passes along under you like a panorama, see to it that in your excitement you do not fall overboard as a boy friend of mine once did.
The Library of Work and Play, OUTDOOR SPORTS AND GAMES
BY CLAUDE H. MILLER, PH.B., 1911
(Now in the Public Domain: not copyrighted in the United States)
NOTE: Parents, be sure to supervise your children well when they are on the water and use this Water Telescope. Take all necessary safety precautions.