WHEN public interest in the curiosities of science was widespread, some fifty years ago, the possession of a microscope was a social necessity. The instrument to-day is no longer the popular plaything ...

When the microscope was first invented, it was a novelty item. Early examples were called flea or fly glasses, since they magnified those small insects to what seemed a great size at the time. But ...

THE views expressed in the previous notice of this work which appeared in NATURE (February 6, 1908) would appear to have been amply borne out in the welcome accorded to it by the public, since a ...

This full lesson PowerPoint (with suggested practical tasks and worksheet) will allow you to teach a broad range of abilities about how to focus a microscope, why they are important and how to ...