After an extremely rapid development up to 1847, manufacturing had to pass through a formidable crisis. While the average annual number of persons convicted in England and Wales was 20,455, and this figure fell to 18,100 and 17,400 in the prosperous years, 1845–1846, it rose during the years of crisis, 1847–1848, to 21,500 and 22,900, falling again to 21,000 in 1849, when business had resumed its normal course. In the years following, industry received an enormous impetus, in consequence of the discovery of gold in California, the repeal of the Corn Laws, and many other causes. In 1857 came the panic, which affected all industrial countries, especially England. In 1856–1860 there was an annual average of 13,565 convictions; in 1857 it was 15,307, an increase of 12%. That the consequences of this crisis are not to be observed in the figures for crime in Prussia, is to be attributed to the fact that in that country manufacturing was little developed. After the very dear years 1852–1856 the price of grain remained fairly constant in Prussia. It was only in 1860–1862 that it rose a little and caused an increase in the cases of fraud and theft. 1867–1868 were years which were marked by an extraordinarily high price for grain, which had some influence upon crime, without equalling that of such years as 1852–1856. Crime decreased in the years of war, 1866 and 1870–1871, due as Dr. Müller thinks, to two facts; first, that a great part of the population capable of committing crimes were then out of the country; and second, that the feeling of solidarity is stronger in time of war. Notwithstanding the rise in the price of grain in 1871–1874, crime decreased greatly after the war of 1870. A modification of the penal law could not be the cause of it; its origin was deeper. Since 1871 Germany has seen its industries develop prodigiously. The period of prosperity was of short duration, for in the summer of 1873 came the crisis, which lasted till 1878. Now it is during these years that the crimes against property were much increased. When we study this period in other countries, in Austria and England, for example, we see a great industrial development, accompanied by a decrease in crime. The average number of criminals in Austria for the years 1860–1870 was 32,800, and 26,900 for the years 1871–1875. In England the figures for the same period were 14,100 and 11,200 respectively. France alone was an exception, for in this country manufacturing did not begin to develop immediately after the war. [78] But in Austria and England the effects of the crisis upon crime were felt just as in Prussia. In Austria, for example, criminality increased 10%. From 1878 on, business improved in Prussia and in other countries also, and little by little the number of crimes against property decreased (between 1885 and 1890 7% in France, 9% in Austria, and 20% in England).