THE AMATEUR SCIENTIST.

The article discusses the development of a transistorized drive for a small telescope and a sundial that keeps accurate time. A transistorized drive for a small telescope was constructed by George W. Ginn, an engineer at Lihue, Hawaii. It used a small synchronous motor energized by an oscillator amplifier using a transistor which is usually found in electric clocks. Meanwhile, a sundial was developed by C. L. Stong for detecting the accuracy of clock time. The structure of the device was derived from the armillary.