as he did so he became aware that some one was behind him, and at the same time a voice called out to him to wait. then his helmet was seized from the back. "who are you?" said watanabe fearlessly. he then put out his hand and groped around to find out who or what it was that held him by the helmet. as he did so he touched something that felt like an arm it was covered with hair and as big round as the trunk of a tree!