five o’clock
Gradually the form of the island grew more distinct on the horizon . The orb of day sinking in the west , threw up its peculiar outlines in sharp relief . A few peaks of no great elevation stood out here and there , tipped with sunlight . At five o'clock John Mangles could discern a light smoke rising from it . `` Is it a volcano ? '' he asked of Paganel , who was gazing at this new land through his telescope . `` I do n't know what to think , '' replied the geographer ; `` Maria Theresa is a spot little known ; nevertheless , it would not be surprising if its origin were due to some submarine upheaval , and consequently it may be volcanic . ''