Rensselaer Republican, Volume 26, Number 48, Rensselaer, Jasper County, 26 July 1894 — A WATER TELESCOPE. [ARTICLE]

A WATER TELESCOPE.

How the Simple Instrument -May Be Constructed. The water telescope miy be made of wood or of tin, whichever you prefer, and we will describe both. The tin is better, because it is lighter and more easily handled. Its manufacture is very simple. Get a tinsmith to make for you a funnel shaped tin horn about three feet long. It should be eight or ten inches in diameter at the bottom and brand enough at tho top for both eyes to look into. Into the bottom put a piece of glass, cut to fit, and make it perfectly water-tight The inside should be painted black to prevent tho reflection of the light upon the surfuce of the tin. Around the outside of tho bottom soldei on several sinkers to offset the buoyancy of the air in the water-tight horn and make it easier to submerge. If it is not convenient to get a round piece of glass, have the large end made square and use squnro glass. That’s all there is of it, and when you sink your instrument down into the water ana put your ayes at the small end you will be perfectly astonished at the plainness with which you will see all kinds of fish and v/atoi* animals swimming around in a state of nature.