Rensselaer Semi-Weekly Republican, Volume 41, Number 82, Rensselaer, Jasper County, 2 July 1909 — The Ultra Microscope. [ARTICLE]

The Ultra Microscope.

The ultra microscope is a recent device of science. By its aid it is expected that many micro-organisms which hitherto defied observation will be detected. As the classification of microbes has advanced, biologists have inclined to the conclusion that many must still remain unknown, too small to be perceived with any instrument hitherto in use.

The fiew apparatus is the invention of two Frenchmen, Cotton and Monton. It involves no change in the existing arrangement of lenses. It is the system of lighting that is revolutionized. The ray is used at right angles to the axis of the instrument, instead of coinciding with it. Thus the light sweeps across the objective parallel with its plane. By this means it is said that many particles so small that they have defied detection under the most powerful glasses become visible as brilliant points. It is a new world, enthusiastic microscopists say, that is opened to scientific study.