Our knowledge of actinic influence on inanimate nature is not so scanty, for it is now a well established fact, that the sunbeam can not fall on any body, whether simple or compound, without producing on its surface a chemical and molecular change. The immovable rocks which bound our shores, the mountain which rears its lofty head above the clouds, the magnificent cathedral, the very triumph of art, and the beautiful statue in bronze or marble, are all acted on destructively by the sunbeam, and would soon perish beneath its irresistible energy, but for the beautiful provision made for their restoration during the darkness of night--the repose of darkness being no less essential to inorganic, than it is to animated nature. During its silent hours, the chemical and molecular changes are all undone, and the destruction of the day repaired, we know not how. The art of painting by the sunbeam has been rather unfortunately called photography, which means light-painting, for the process is not due to light, but is rather interfered with by it; and, contrary to all preconceived ideas, the pictures taken in our comparatively sombre country, are more easily and brilliantly produced than in brighter and more sunny lands--so much so, that a gentleman, who took the requisite materials to Mexico, in order to take views of its principal buildings, met with failure after failure, and it was not until the darker days of the rainy season that he met with any measure of success. THE RECORD OF A MADNESS WHICH WAS NOT INSANITY. A fresh, bright dawn, the loveliest hour of an English summer, was rousing the slumbering life in woods and fields, and painting the heavens and the earth in the gorgeous hues of the sunrise. Beautiful it was to see the first blush of day mantling over the distant hills, tinging them with a faint crimson, and the first smile shooting, in one bright beam through the sky, while it lit up the fair face of nature with a sparkling light. Lilias Randolph stood on the flight of steps which led from the Abbey to the park, and looked down on the joyous scene. She seemed herself a very type of the morning, with her sunny eyes, and her golden hair; and her gaze wandered glad and free over the spreading landscape, while her thoughts roamed far away in regions yet more bright--even the sunlit fields of fancy. It was the day and the hour when she was to go and meet Richard Sydney, in order to have, at length, a full revelation of his mysterious connection with her cousin. She knew that it was an interview of solemn import to both of those, in whom she felt so deep an interest; yet, so entirely were one thought and one feeling alone gaining empire over her spirit that, even then, in that momentous hour, they had no share in the visions with which her heart was busy.