Wickham saw that there were difficulties that would prevent the gathering of wild rubber from keeping pace with the growing demand. Although millions of rubber trees still stood untouched in the Brazilian forests, only those trees near the river banks could be tapped because of the impossibility of getting the rubber out of the dense vegetation. Life in the jungle was dangerous and lonely, and therefore rubber gatherers were not easy to find. They were compelled to work far from their families and friends, and in constant danger from wild beasts, reptiles and death-bearing fevers. It is no wonder that rubber obtained in this way came to be known as "wild rubber." Moreover, transporting the crude product through the jungles was hard and expensive and the rubber obtained under these conditions was not always so clean or high in quality as might be wished. "If rubber trees grow from the seeds which nature scatters in the jungle," said Wickham to himself, "why should they not grow from seeds put into the ground by hand?" "If rubber trees could be raised from seed, they could be planted in the open in rows where they could easily be tended and tapped, and the rubber gathered quickly and safely. Instead of having to brave the dangerous jungles, men could plant and cultivate rubber in spots of their own choosing so long as they chose places where the climate was right." For many years people only laughed at Wickham's great idea, but like Goodyear he had faith enough to persevere. While in Brazil he planted some rubber seeds to see what would happen. The seeds DID grow, and the book which Wickham wrote about his idea and his experiments finally came into the hands of Sir Joseph Hooker, the Director of the Botanical Gardens in Kew, near London. So interested did he become that he called Wickham's plan to the attention of the Government of India, and finally Wickham was commissioned to take a cargo of rubber seeds to England, so that his idea might be tried out. This commission was more difficult than one might think, and all of Wickham's faith and perseverance were needed to carry it out. Indeed for a time it seemed hopeless, principally because the seeds so quickly dry up and lose their vitality that they must be planted very soon after being gathered. But Wickham watched his opportunity, and finally he was able to charter a ship in the name of the Indian Government. About a third of the way up the Amazon River he placed in her hold several thousand carefully packed seeds of the Hevea Braziliensis, or rubber tree. Let Wickham, himself, tell how he surmounted the next difficulty: