Chapter III: TECHNOLOGY.--A Reliable Water Filter.--With engraving
Text size
Simple Devices for Distilling Water.--4 figures.
Improved Fire Damp Detecter.--With full description and engraving.
Camera Attachment for Paper Photo Negatives.--2 figures.
Instantaneous Photo Shutter.--1 figure.
Sulphurous Acid.--Easy method of preparation for photographic
purposes.
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Scientific American Supplement, No. 460, October 25, 1884Chapter III: TECHNOLOGY.--A Reliable Water Filter.--With engraving
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