The law of 23rd January 1904 and the regulation of 25th October of the same year have provided for this condition. One must not forget that all commerce is conditioned by the law of supply and demand, and that to avoid overloading the market with produce, production must be limited, according to circumstances, and in proportion to actual requirements; and beyond the limit of absorption the productive energies of the country must be diverted to other cultures or industries, more remunerative and more certain as to results.[66] [Footnote 66: See the important work entitled _La Culture des Plantes Industrielles dans la République Argentine_, by Carlos D. Girola, published in the _Recensement de l’agriculture et de l’élevage de la Nation_, Vol. 1. 1908, from which these data are extracted.] Of all the sugar sold in the Argentine, only part is refined; there is at present only one refinery[67] in the country; namely, the “Refineria Argentina” of Rosario. The greater proportion of Argentine sugar is delivered to the consumer in the form of “moist” or brown sugar, which is graded according to its colour and the care taken in its manufacture. [Footnote 67: The thirty-two factories hitherto referred to would presumably be crushing-mills, where cane is crushed, the juice evaporated into syrup or molasses and in some cases dried, the product being “raw” sugar.——[TRANS.]] There are in several districts, and especially in the neighbourhood of Misionès, rudimentary factories where an impure sugar known as “rapadura” is prepared, which is sold in cubes or tablets. We have no precise data as to the production of the various grades of sugar. During the last twelve years the manufacture of sugar has been greatly improved, as a consequence of the crisis through which the industry passed, which demonstrated the necessity of perfecting the methods of preparing and refining the “sap,” etc. To-day a yield is obtained of 7-1/2, 8-1/2, and even 9 per cent. of sugar. The capital sunk in the sugar industry in the Province of Tucuman amounts in round figures to £4,136,000, and is distributed as follows: Land, £1,232,000; plantations, £440,000; machinery, £1,496,000; buildings £968,000. It will be as well to give some retrospective data here, which will show how far the production of sugar has developed during the last few years. In another chapter we shall deal with the production of sugar from the industrial point of view. Thus, in 1884 the harvest was 24,000 tons; in 1894, 75,000 tons; and in 1895 it amounted to 109,000 tons, or an increase of 352 per cent. in eleven years. In 1904 the yield was 134,000, or an increase of 360 per cent. over that of 1884. In 1905 it was 137,000 tons; in 1906, 180,000; in 1907, 113,000.