vaporescence

Intricate as it is, all is blended into a cloud-like harmony of shade, which becomes fainter and fainter, as it retires, with the most delicate flatness and unity of tone. And it is by this kind of vaporescence, so to speak, by this flat, misty unison of parts, that nature, and her faithful followers, are enabled to keep the eye in perfect repose in the midst of profusion, and to display beauty of form.