Search Only Images Visit Image Gallery FAQ page Visit Image Gallery FAQ imggal_sm2.png The Northern and Southern Hemispheres, with track of HMS Challenger from Thalassa; an essay on the depth, temperature, and currents of the ocean. Download this image Image ID: SIL-39088000955401_thalassaessayond00wil_0021 Cite this: Wild, John James. 1877. Thalassa an essay on the depth, temperature, and currents of the ocean, London : M. Ward & Co. Supplied Caption: The Northern and Southern Hemispheres, with track of HMS Challenger. Tag(s): Earth Science, science, hemisphere, Northern Hemisphere, Southern Hemisphere, Western Hemisphere, Eastern Hemisphere, earth, Axis, Season, winter, spring, summer, fall, Equator, Prime Meridian Collection(s): Unstacked Topic(s): Science Find in: Library Catalog Download: Image No Copyright - United States Request copy of image How can I use this image?