The sky grows threatening and overcast; there is brilliant sheet lightning, while the ever-increasing closeness of the atmosphere announces the near vicinity of the Gulf Stream. During the night masses of heavy thunder-clouds roll up, the wind rises on every side, and the wildness of the running seas increases, till steering becomes noticeably difficult. Measurements record an increase in the water temperature, which finally rises up to 82½ degrees Fahrenheit. Now we are in the Gulf Stream, whose periphery is marked in the air above by a fiery crown of heavy tropical thunder-clouds. Vivid sea phosphorescence and strong atmospherical disturbances are also accompanying signs of the presence of the Stream. This is noticeable from our wireless apparatus, which is strongly affected by the heavy electrical conditions of the atmosphere. Hitherto it has kept us faithfully in touch with the army bulletins from the Nauen station. The phosphorescence of the waters makes observation very difficult. One's eyes are blinded and observation made difficult by the continuous sparkling of the surface of the sea in the blackness of the night. This state of things is far from pleasant, for we are now approaching a zone where many steamer tracks cross each other, and double precautions are necessary. Added to this, the foulness of the weather increases. Heavy seas spring up, and a storm of hail beats down on the deck. Over the foaming whipped-up waves a wind of strength 11 to 12 is blowing. All around over the boiling sea hang heavy black balls of clouds, from which a pale yellow light darts out incessantly--regular broadsides of lightning. Then suddenly all is enveloped in blackest night again, while at times the whole boat and the surrounding water are lit up by flashes of greenish light, in which every detail shows up with startling distinctness.... The whole air is filled with tumultuous uproar, and overhead the thunder crashes continuously. We are approaching the centre of the storm. The boat is surrounded by an unearthly storm-world. It is as if the end of all things had come.... Suddenly the head-lights of a big steamer rise up behind us. In the darkness of the night we are able to avoid her without difficulty. Like a shining vision she disappears in the distance. She is a passenger steamer who, judging by her course, has come from the Mediterranean. I must confess we watched her row of lights with a feeling of envy, till rain and darkness swallowed her up from sight again.