seven o’clock
Upon resuming his post , in the morning , the doctor consulted his compass , and found that the wind had changed during the night . The balloon had been bearing about thirty miles to the northwest during the last two hours . It was then passing over Mabunguru , a stony country , strewn with blocks of syenite of a fine polish , and knobbed with huge bowlders and angular ridges of rock ; conic masses , like the rocks of Karnak , studded the soil like so many Druidic dolmens ; the bones of buffaloes and elephants whitened it here and there ; but few trees could be seen , excepting in the east , where there were dense woods , among which a few villages lay half concealed . Toward seven o'clock they saw a huge round rock nearly two miles in extent , like an immense tortoise . `` We are on the right track , '' said Dr. Ferguson . `` There 's Jihoue-la-Mkoa , where we must halt for a few minutes . I am going to renew the supply of water necessary for my cylinder , and so let us try to anchor somewhere . ''