Notwithstanding the excessive heat of the climate, the thermometer rising in the open air to 45 degrees, and in the shade to 33 degrees, and even to 35 degrees, the commander and his officers carried on with unremitting zeal the observations and surveys which it was the object of the Expedition to make. A few fell victims to their own imprudence, for in defiance of the earnest warnings of Freycinet, some of the young officers and the seamen chose to sally forth in the middle of the day, and with the view of fortifying themselves against the injurious effects of their dangerous freak, drank and ate plentifully of cold water and sour fruits. The result was that in a short time five of the most imprudent were confined to their hammocks with dysentery. This necessitated a departure from Timor; so the _Uranie_ weighed anchor and set sail on the 23rd October. At first the corvette sailed rapidly along the north coast of Timor, for the purpose of making a survey, but when she had reached the narrowest part of the Channel of Ombay, she encountered such violent currents that--the winds being slight and contrary--it was only with great difficulty she was able to regain the course which she had lost during the calm. No less than nineteen days were wasted in this trying situation; though certain of the officers took advantage of the delay to land on the nearest point of the island of Ombay, where the coast had a very inviting appearance. They went on shore near a village called Bitouka, and advanced to meet a body of the natives, armed with shields and cuirasses made of buffalo-skin, and carrying bows, arrows, and daggers. Savages though they were, they had quite the air of warriors, and were not at all afraid of fire-arms; on the contrary, they argued that the loading of the gun caused loss of time, for while that operation was going on, they could fire off a great number of arrows.