half-bulb

Updated: June 20, 2025

This half-bulb serves likewise for another purpose. From the moment that the large bulb makes the lime-water turbid with an air containing two per cent. of CO , it is clear that the small one can cause the same turbidity only with air twice richer in CO , i.e., of four per cent. This apparatus, although it makes no pretensions to extreme accuracy, is capable of giving valuable information.

Various - Scientific American Supplement, No. 460, October 25, 1884