Doctor Bronson told him to get ready as soon as he liked; and in order that there could be no mistake about it he showed his authority from the government officials at Cairo, and also those from the commander of the district at Gondokoro. Mr. Cameron said he would have the provisions and fuel on board in a couple of days, provided he had the assistance of the commander of the post to compel the people to work. They needed a little urging, he said, and the best way of urging them was to put them under the guard of a file of soldiers. Our friends were well aware that the two days would grow to four or five, as nothing is ever done in Africa in the time agreed upon. So it was decided that Frank should continue his journey with the escort, which was to leave the next day, and the Doctor and Fred would accompany him for the first day's journey, as agreed. This would cause no detention of the boat, as their baggage could be put on board in a few hours when the _Khedive_ was in readiness. They were off in good season in the morning, and made their camp in a pretty little valley, close by a brook that reminded the boys of a similar stream near their birthplace. The next morning the good-byes and good wishes were pronounced, and the travellers turned away from each other. There were tears in their eyes as their hands met in a farewell clasp; their utterance was so choked by the lumps in their throats that the words they forced out were indistinct. Africa is a land of dangers and uncertainties, and perhaps they were destined not to meet again. No wonder there was sadness at the separation, or that Frank regretfully parted with friends he loved so well, and by whom he was warmly cherished. At last the windings of the road hid them from view, and he turned resolutely with his gaze directed toward the equator. CHAPTER XII. DEPARTURE OF THE TWO EXPEDITIONS.--IN THE SHOOLI COUNTRY.--ATTACKED IN AN AMBUSCADE. The horses were sent with Frank, as they would be of no use in the steamboat journey, and it was arranged that they should be at Murchison Falls in exactly a month from the date of departure from Afuddo, if everything went well. Captain Mohammed said a month would suffice for the journey, if they had no detentions on the road. To cover contingencies, an allowance of eight days was added to the above period, so that it was agreed to meet on the thirty-eighth day, unless prevented by some unforeseen circumstance. Fred had wondered how the Doctor and himself would return to Afuddo from their day's journey with Frank. The horses were to leave them, and he saw no alternative but a pedestrian journey, to which he was not at all inclined. Satisfied that Doctor Bronson had considered the case, and made proper provision for it, he asked no questions, though he could not help revolving the subject in mind. The morning of their departure for the return to Afuddo solved the mystery.