"Was the Bishop cross with Father?" Mark inquired afterward; he could find no other theory that would explain so much talking to his father, so little talking by his father. "Dearest, I'd rather you didn't ask questions about the Bishop," his mother replied, and discerning that she was on the verge of one of those headaches that while they lasted obliterated the world for Mark, he was silent. Later in the afternoon Mr. Astill, the Vicar, came round to see the Missioner and they had a long talk together, the murmur of which now softer now louder was audible in Mark's nursery where he was playing by himself with the cork-bottomed grenadiers. His instinct was to play a quiet game, partly on account of his mother's onrushing headache, which had already driven her to her room, partly because he knew that when his father was closeted like this it was essential not to make the least noise. So he tiptoed about the room and disposed the cork-bottomed grenadiers as sentinels before the coal-scuttle, the washstand, and other similar strongholds. Then he took his gun, the barrel of which, broken before it was given to him, had been replaced by a thin bamboo curtain-rod, and his finger on the trigger (a wooden match) he waited for an invader. After ten minutes of statuesque silence Mark began to think that this was a dull game, and he wished that his mother had not gone to her room with a headache, because if she had been with him she could have undoubtedly invented, so clever was she, a method of invading the nursery without either the attackers or the defenders making any noise about it. In her gentle voice she would have whispered of the hordes that were stealthily creeping up the mountain side until Mark and his vigilant cork-bottomed grenadiers would have been in a state of suppressed exultation ready to die in defence of the nursery, to die stolidly and silently at their posts with nobody else in the house aware of their heroism.