Sir John ordered an Observatory be set up atop the giant berg, which towers more than twice as tall as our Highest Mast, and while Lieutenant Gore and some of the officers from Terror take atmospheric and astronomical measurements up there—they have erected a tent for those spending the night atop the Precipitous Ice Mountain—our Expedition Ice Masters, Mr. Reid from Erebus and Mr. Blanky from Terror, spend the daylight hours staring west and north through their brass telescopes, seeking, I am informed, the most likely path through the near-solid sea of ice already formed there.