Presuming that you will expect from me some account of the great World's Fair, I take my pen to give you my own impressions, although I am afraid that anything which I may say about this "Lion of the day," will fall far short of a description. On Monday last, I quitted my lodgings at an early hour, and started for the Crystal Palace. This day was fine, such as we seldom experience in London, with a clear sky, and invigorating air, whose vitality was as rousing to the spirits as a blast from the "horn of Astolpho." Although it was not yet 10 o'clock when I entered Piccadilly, every omnibus was full, inside and out, and the street was lined with one living stream, as far as the eye could reach, all wending their way to the "Glass-House." No metropolis in the world presents such facilities as London for the reception of the Great Exhibition, now collected within its walls. Throughout its myriads of veins, the stream of industry and toil pulses with sleepless energy. Every one seems to feel that this great Capital of the world, is the fittest place wherein they might offer homage to the dignity of toil. I had already begun to feel fatigued by my pedestrian excursion as I passed "Apsley House," the residence of the Duke of Wellington, and emerged into Hyde Park. I had hoped that on getting into the Park, I would be out of the crowd that seemed to press so heavily in the street. But in this I was mistaken. I here found myself surrounded by and moving with an overwhelming mass, such as I had never before witnessed. And, away in the distance, I beheld a dense crowd, and above every other object, was seen the lofty summit of the Crystal Palace. The drive in the Park was lined with princely-looking vehicles of every description. The drivers in their bright red and gold uniforms, the pages and footmen in their blue trousers and white silk stockings, and the horses dressed up in their neat, silver-mounted harness, made the scene altogether one of great splendour. I was soon at the door, paid my shilling, and entered the building at the south end of the Transept. For the first ten or twenty minutes I was so lost in astonishment, and absorbed in pleasing wonder, that I could do nothing but gaze up and down the vista of the noble building. The Crystal Palace resembles in some respects, the interior of the cathedrals of this country. One long avenue from east to west is intersected by a Transept, which divides the building into two nearly equal parts. This is the greatest building the world ever saw, before which the Pyramids of Egypt, and the Colossus of Rhodes must hide their diminished heads. The palace was not full at any time during the day, there being only 64,000 persons present. Those who love to study the human countenance in all its infinite varieties, can find ample scope for the indulgence of their taste, by a visit to the World's Fair. All countries are there represented--Europeans, Asiatics,