In 1897 California provides a minimum wage of two dollars on public contracts, and Kansas adopts the first statute against what are termed indirect contempts; that is, requiring trial by jury for contempts not committed in the presence of the court. There is a little legislation against blacklisting, and Southern States forbid the farming out of convict labor. In 1898 Virginia copies the Kansas statute against indirect contempts, and one or two States require convict-made goods manufactured outside the State to be so labelled, which statutes have since been held unconstitutional as an interference with interstate commerce. In 1899 the question of discrimination against union labor becomes still more prominent and it is in some States made a misdemeanor to make the belonging or not belonging to a union a condition of employment. All these statutes have since been held unconstitutional. In 1900, a year of great prosperity, there is almost no labor legislation. In 1901 we only find laws establishing free employment bureaus, except that California provides a maximum time for women and children of nine hours a day in both manufacturing and mercantile occupations, and a minimum wage upon all public work of twenty cents an hour. In 1902 Colorado overrules her Supreme Court by getting by constitutional amendment an eight-hour day in mines. Massachusetts passes a joint resolution of the Legislature asking for a Federal constitutional amendment which shall permit Congress to fix uniform hours of labor throughout the United States, and Kentucky and other Southern States begin to legislate to control the hours of labor of women and children. In 1903 this movement continues and in the Northwestern States, Oregon and Colorado, the length of hours of labor of women of all ages is generally limited. Weekly payments and anti-truck laws are adopted. Montana forbids company boarding-houses and Colorado makes the striking attempt to do away with the so-called dead line; that is to say, a statute forbidding any person to be discharged by reason of age, between the years of eighteen and sixty. California follows Maryland in abolishing the conspiracy law, both as applied to employers and employees.[1] It does not seem that in either State this statute has yet been tested as class legislation. Legislation against the open shop continues in far Western States, while Minnesota makes it a misdemeanor for an employer to exact as a condition of employment that the employee shall not take part in a strike. [Footnote 1: See the next chapter.] In 1904 there is little legislation. Far Western States go on with the protection of child labor, particularly in mines, and Alabama adopts a general statute against picketing, boycotting, and blacklisting.