With the advent of the second decade of the Empire the labor movement acquired an amplitude it had never had before. Its main characteristic during this period was a decided effort to break the legal barriers in its way and to come out into the open. The workingmen's chief demands were the abolition of the law on coalitions and the right to organize. The workingmen were given an opportunity to express their views and sentiments on occasions of National and International Exhibitions. It had become a custom in France to send delegations of workingmen to such exhibitions. In 1849 the Chamber of Commerce of Lyons sent a delegation of workingmen to the National Exhibition in Paris. In 1851 the municipality of Paris sent some workingmen to the International Exhibition in London. A delegation was sent again to London in 1862 and to Paris in 1867. The workingmen-delegates published reports in which they formulated their views on the condition of their respective trades and expressed their demands and aspirations. These reports have been called the _cahiers_ of the working-class. The authors of the reports--workingmen themselves, elected by large numbers of workingmen--were representatives in the true sense of the term and voiced the sentiments and ideas of a large part of the French workingmen of their time. The reports published by the delegates of 1862 contain a persistent demand for freedom to combine and to organize. The refrain of all the reports is: "Isolation kills us".[27] The trade unions of England made a deep impression on the French delegates and strengthened their conviction of the necessity of organization. "Of 53 reports emanating from 183 delegates of Paris, 38 by 145 delegates express the desire that syndical chambers be organized in their trades."[27] [27] G. Weill, _op. cit._, pp. 63-65. The government of the Empire, which hoped to interest the workingmen in its existence, gave way before their persistent demands. In 1864, in consequence of a strike of Parisian printers which attracted much public attention, the old law on coalitions was abolished and the right to strike granted.