Stories by Albert G. Ingalls

On scintillation counters and how a group of amateurs helped to build a planetarium

About a portable terrestrial telescope and the enjoyment of chromatography

On the fascination of microscopy and some curious amateur observations of the moon

On mouse genetics and a variety of things of interest to the avocational astronomer

The study of rocks and the making of two relatively simple telescopes

On the culture of plants without soil, and the behavior of the telescope-maker's pitch

About home-made cloud chambers and the fine telescope of a Portuguese navy officer

Concerning (1) the life of the May fly; (2) the spectra of diffraction gratings

The pleasures and pitfalls of archaeology, and more on the making of ruling engines

Mountain geology and an amateur contribution to a new ruling engine

The increasing demand for diffraction gratings, which sort out the colors of light, is currently stimulating new improvements in the fantastically accurate machines which manufacture them

About the banding of birds and the cooperative building of a telescope