 Complete the following phrase:  An aversion to the use of dogs pervaded all the British expeditions during the Heroic Age of Antarctic Exploration including those led by Ernest Shackleton. This was baffling to the great Norwegian explorers Fridtjof Nansen and Roald Amundsen. To them manhauling was futile toil, to be avoided at all costs. Edward Wilson, however, on the fatal southern journey during Scotts 19101913 