Figure 31. Timtschenko water bottle, inspired by the Wille bottle, and built by
the instrument maker Iosif A. Timtschenko for sampling waters of the Black Sea
and analyzing for dissolved hydrogen sulfide content. This instrument was built
in 1891 and used by Joseph B. Spindler in his studies of the Black Sea. The
interior was of gold to resist corrosion. Left: descending. Right: ascending.