He spread out his hood more than ever, and Rikki-tikki saw the spectacle-mark on the back of it that looks exactly like the eye part of a hook-and-eye fastening. He was afraid for the minute; but it is impossible for a mongoose to stay frightened for any length of time, and though Rikki-tikki had never met a live cobra before, his mother had fed him on dead ones, and he knew that all a grown mongoose's business in life was to fight and eat snakes. Nag knew that too, and at the bottom of his cold heart he was afraid.
"Well," said Rikki-tikki, and his tail began to fluff up again, "marks or no marks, do you think it is right for you to eat fledglings out of a nest?"
Nag was thinking to himself, and watching the least little movement in the grass behind Rikki-tikki. He knew that mongooses in the garden meant death sooner or later for him and his family; but he wanted to get Rikki-tikki off his guard. So he dropped his head a little, and put it on one side.
"Let us talk," he said. "You eat eggs. Why should not I eat birds?"
"Behind you! Look behind you!" sang Darzee.
Rikki-tikki knew better than to waste time in
