There are now thirty steam powerloom factories in Coventry, producing about seven thousand pieces of ribbons in the week, and employing about three thousand persons. It seems not to be ascertained how large a proportion of the population are employed in the ribbon manufacture: but the increase is great since the year 1838, when the number was about eight thousand, without reckoning the outlying places, which would add about three thousand to the number. The total population of the city was found, last March, to amount to nearly thirty-seven thousand. So, if we reckon the numbers employed in connection with the throwing-mills and dye-houses, we shall see what an ascendency the ribbon manufacture has in Coventry. At the factory we are entering, the preparatory processes are going forward at the top and the bottom of the building. In the yard is the boiler fire, which sets the engine to work; and, from the same yard, we enter workshops, where the machinery is made and repaired. The ponderous work of the men at the forge and anvils contrasts curiously with the delicacy of the fabric which is to be produced by the agency of these masses of iron and steel. Passing up a step-ladder, we find ourselves in a long room, where turners are at work, making the wooden apparatus required, piercing the "compass boards," for the threads to pass through, and displaying to us many ingenious forms of polished wood. While the apparatus is thus preparing below, the material of the manufacture is getting arranged, four stories overhead. There, under a skylight, women and girls are winding the silk from the hanks, upon the spools, for the shuttles. Here we see, again, the clouded silk, which is to make plaid ribbons, and the bright hues which delighted our eyes at the dyeing-house. This is easy work,--many of the women sitting at their reels; and the air is pure and cool. The great shaft from the engine, passing through the midst of the building, carries off the dust, and affords excellent ventilation. Besides this, the whole edifice is crowned by an observatory, with windows all round; and no complete ceilings shut off the air between this chamber and the rooms of two stories below. In clear weather, there is a fine view from this pinnacle, extending from the house, gardens, and orchard of the Messrs. Hamerton below, over the spires of Coventry, to a wide range of country beyond.