About five o'clock
He continued writing till past midday . When he felt hungry , he went into the dining-room , took a biscuit or two , and a glass of vermuth . Then , because it was now the hour for repose , and because the air outside was hot , and the sea-breeze had dropped to a dead calm , and the sun was like a red-hot glaring furnace overhead , the doctor kicked off his boots , threw off his coat , lay down on a grass mat under the mosquito-curtain , and instantly fell fast asleep . About five o'clock he awoke and got up ; the heat of the day was over . He took a long draught of cold tea , which is the most refreshing and the coolest drink in the world . The sun was now getting low , and the air was growing cool . He put on his helmet , and set off again to walk round his domain .