By order of the Mortgagees on Wednesday and Thursday, March 3rd and 4th, 1880, Mr. Douglas Young sold by auction the plant and machinery of the above extensive works, including 5 large Cornish steam boilers, tubular boiler, 3 egg boilers, a bottle boiler, a 4000 gallon wrought iron tank, 12 smaller ditto, 4 large circular tanks, 5 steam barrel of various sizes, flange pipes, 3 large iron coils, about 70 tons old metal, several copper and iron boilers of various sizes, furnace fittings, weighing bridge by Hodgson and Stead, self-feeding boiler and engine, about 150,000 sound bricks, a large quantity of sound timber including balk timber, yellow deals, planks, battens, die-square, floor and lining boards, and 50 tons of breeze, several stacks of firewood, pantiles, drain pipes and other plant materials. SLEAFORD STREET appears to have obtained an amount of respectability that it had not of yore. Once upon a time one side was nicknamed "Ginbottle Row," and the opposite side was called "Soapsuds Bay!" Mill-Pond Bridge was very narrow, about half its present width, with a low parapet on both sides. If the following statement could be relied on, it would perhaps allay the fears created by certain alarmists respecting the physical limits to deep coal mining and duration of the coal supply. "There are coal deposits in various parts of Great Britain at all depths down to 10,000 or 12,000 feet. Mining is possible to a depth of 4,000 feet, but beyond this the high temperature is likely to prove a barrier. The temperature of a coal mine at a depth of 4,000 feet will probably be found as high as 120º Fahr.; but there is reason to believe that by the agency of an efficient system of ventilation the temperature may be reduced, at least during the cooler months of the year, as to allow mining operations without unusual danger to health. Adopting a depth of 4,000 feet as the limit to deep mining there is still a quantity of coal in store in Great Britain sufficient to afford the annual supply of twenty-two millions of tons for a thousand years."--_Hull._[1] [Footnote 1: More than a quarter of a century ago, Professor Buckland when examined before the House of Commons, limits the supply to 400 years. Mr. Bailey in his Survey of Durham limits the supply to 200 years only. But some proprietors when examined in 1830 extended the period of total exhaustion of the mines to 1,727 years; they assumed that there are 837 square miles of coal strata in this field and that only 105 miles had been worked out.