"I have sometimes come upon the Iguana, the big lizard, as they were sunning themselves upon a flat stone in a river-bed. They are not pretty in shape, but nothing can be imagined more beautiful than their colouring. They shine like a heap of precious stones or like a pane cut out of an old church window. When, as you approach, they swish away, there is a flash of azure, green and purple over the stones, the color seems to be standing behind them in the air, like a comet's luminous tail. Once I shot an Iguana. I thought that I should be able to make some pretty things from his skin. A strange thing happened then, that I have never afterwards forgotten. As I went up to him, where he was lying dead upon his stone, and actually while I was walking the few steps, he faded and grew pale, all colour died out of him as in one long sigh, and by the time that I touched him he was grey and dull like a lump of concrete. It was the live impetuous blood pulsating within the animal, which had radiated out all that glow and splendor. Now that the flame was put out, and the soul had flown, the Iguana was as dead as a sandbag."