~Inventors and Inventions.~--Birmingham, for a hundred years, led the van in inventions of all kinds, and though to many persons patent specifications may be the driest of all dry reading, there is an infinitude of interesting matter to be found in those documents. Much of the trade history of the town is closely connected with the inventions of the patentees of last century, including such men as Lewis Paul, who first introduced spinning by rollers, and a machine for the carding of wool and cotton; Baskerville, the japanner; Wyatt, partner with Paul; Boulton, of Soho, and his coadjutors, Watt, Murdoch, Small, Keir, Alston, and others. Nothing has been too ponderous and naught too trivial for the exercise of the inventive faculties of our skilled workmen. All the world knows that hundreds of patents have been taken out for improvements, and discoveries in connection with steam machinery, but few would credit that quite an equal number relate to such trifling articles as buckles and buttons, pins and pens, hooks and eyes, &c.; and fortunes have been made even more readily by the manufacture of the small items than the larger ones. The history of Birmingham inventors has yet to be written; a few notes of some of their doings will be found under "_Patents_" and "_Trades_." ~Iron.~--In 1354 it was forbidden to export iron from England. In 1567 it was brought here from Sweden and Russia. A patent for smelting iron with pit coal was granted in 1620 to Dud Dudley, who also patented the tinning of iron in 1661. The total make of iron in England in 1740 was but 17,000 tons, from 59 furnaces, only two of which were in Staffordshire, turning out about 1,000 tons per year. In 1788 there were nine blast furnaces in the same county; in 1796, fourteen; in 1806, forty-two; in 1827, ninety-five, with an output of 216,000 tons, the kingdom's make being 690,000 tons from 284 furnaces. This quantity in 1842 was turned out of the 130 Staffordshire furnaces alone, though the hot-air blast was not used prior to 1835. Some figures have lately been published showing that the present product of iron in the world is close upon 19-1/2 million tons per year, and as iron and its working-up has a little to do with the prosperity of Birmingham, we preserve them. Statistics for the more important countries are obtainable as late as 1881. For the others it is assumed that the yield has not fallen off since the latest figures reported. Under "other countries," in the table below, are included Canada, Switzerland, and Mexico, each producing about 7,500 tons a year, and Norway, with 4,000 tons a year:--