On 17th April, Sverdrup with three men left the ship to make an attempt to cross Ellesmere Land to the west coast. Two days were taken to reach Fort Juliana, which was left on 20th April. After leaving this camp, the ice was found very favourable, and a distance of 38 miles was covered during the first day. At the head of the fiord Sverdrup decided to continue the journey with Bay the zoologist, while the other two were to make a survey from the head of the fiord back to the _Fram_. Sverdrup’s route now lay along the bed of a river, but in the afternoon of the first day rapids were met, and a halt had to be made so that the country ahead could be examined. By making a détour round the rapids, across some sand-hills, better travelling was found, and the ground up to the watershed was covered quickly. Polar oxen were met in considerable numbers. When attacked, they form a square with the calves and heifers in the middle, and the bulls and cows standing in line of defence at equal distances. Sometimes the fiercest of the bulls form a kind of outpost about 25 yards distant from the square, and make individual attacks. When once the square has been formed, the animals remain at their posts until the attack is repulsed or the entire square fallen. They have developed their strategic reasoning powers to a wonderful extent. West of the watershed the country became bare of snow, and progress was arrested by an impassable cañon. After various endeavours to find a passage for the sledges, Sverdrup decided to carry provisions for three days, and to take the dogs loose. In two days they reached a large fiord, which was named “Bay Fiord” after Sverdrup’s companion. The return journey was made without special incident. On 23rd May, Isachsen, the cartographer of the expedition, with Braskerud, set out to cross the glaciated part of Ellesmere Land. The west coast was reached on 4th June. They found considerable difficulty on many occasions in extricating themselves and the dogs from the crevasses in the glaciers, but the journey was completed without serious accident. They reached the _Fram_ on 2nd July.