“My last observation was made at 1 h. and 54 m., at 29,000 feet. I suppose two or three minutes fully were occupied between my eyes becoming insensible to seeing fine divisions, and 1 h. 54 m., and then that two or three minutes more passed till I was insensible; therefore I think this took place at about 1 h. 56 m. or 1 h. and 57 m. Whilst powerless I heard the words, ‘temperature’ and ‘observation,’ and I knew Mr. Coxwell was in the car speaking to me, and endeavoring to arouse me, therefore consciousness and hearing had returned. I then heard him speak more emphatically, but I could not see, speak or move. I heard him again say, ‘Do try—now do.’ Then I saw the instruments dimly, then Mr. Coxwell, and very shortly saw clearly. I rose in my seat and looked round, as though waking from sleep, though not refreshed by sleep, and said to Mr. Coxwell, ‘I have been insensible;’ he said, ‘You have; and I, too, very nearly.’ I then drew up my legs, which had been extended before me, and took a pencil in my hand to begin observations. Mr. Coxwell told me he had lost the use of his hands, which were black, and I poured brandy on them. “I resumed my observations at 2 h. 7 m., recording the barometer reading at 11.53 inches, and temperature −2°. I suppose three or four minutes were occupied from the time of my hearing the words ‘temperature’ and ‘observation’ till I began to observe; if so, then returning consciousness came at 2 h. and 4 m., and this gives seven minutes for total insensibility. I found the water in the vessel supplying the wet-bulb thermometer, which I had by frequent disturbances kept from freezing, was one solid mass of ice; and it did not all melt until after we had been on the ground some time.