Six's Thermometers as used on the CHALLENGER.
In: "The Voyage of H. M. S. CHALLENGER Narrative", Vol. II, Appendix A, p. 5.
Library Call Number Q115.C4 1880 v.II (Narrative).
Image ID: ship3135, Voyage To Inner Space - Exploring the Seas With NOAA Collect Photographer: Archival Photography by Steve Nicklas, NOS, NGS
