Prof. Leone Levi, in a lecture to workingmen on "Work and Wages," estimated the amount of capital required to carry on some of the industries in Great Britain. There are 20,000,000 acres of land cultivated, which at L8 is L160,000,000. The cotton trade requires L80,000,000, wool trade L30,000,000, iron trade L30,000,000, merchant marine L70,000,000; railways have L600,000,000 invested in them, and the waterworks, gasworks, docks, and other undertakings all call for similar vast sums. Construction may be considered as the fixation of work, and here we have about a thousand million pounds worth of fixed labor. Labor in use deals with figures and values that are quite as large. The annual industrial production of France is L480,000,000, and of this L200,000,000 is labor, the remainder being _called_ material, though if the items of its cost were ascertained, current labor would be found to make up a great portion of that sum also. But taking French manufactures as they are reported, we can obtain from them an estimate of the value of machines. The first steam engine was introduced into that country by the city of Paris in 1789, the year of revolution. At that time the cost of labor in manufactures was 60 per cent. and of material 40 per cent. of the whole cost. On this basis the L280,000,000 worth of material used now would require L420,000,000 of labor to work it up. The present industrial population of France is 8,400,000, though all are not fully effective, and on the old basis this would have to be increased to 17,640,000 persons. The other divisions of population, tradesmen, etc., would also increase, and the result is finally apparent that France is not large enough to contain and raise food for the people that would be needed to carry on the modern business on the old methods. The _man_ power of the steam machinery introduced into the industries is estimated at 31,500,000, and as it replaces L220,000,000 worth of labor, we may reckon the wages of a steam man power at L7, or $35, per year, exclusive of food (fuel) and lodging. * * * * * THE NEGRO'S COLOR.