“When we compare the statistics of the last pandemic concerning the influence of vocation, we see in the first place that those first and chiefly were attacked whose occupation compelled them to remain in the open air. This was shown especially by Neidhardt, who studied the influenza epidemic in the Grand Duchy of Hesse. His conclusions, however, were disputed by others. Thus, the prejudicial influence of exposure to the open air was not supported by the statistics of railroad employees in Saxony. Of those who were employed in the outdoor service, 32 per cent. became ill; of those employed in office work, on the other hand, 40 per cent. The statistics of the local benefit societies in Plauen show that the percentage of the sick among farm hands and builders was not greater than that among the members of other benefit societies who worked indoors. In Schwarzenberg the laborers in the forest who were working in the open air all day were affected less than others, and there was no sickness whatever in some forest districts. Lancereaux, of Paris, states that most of the railroad employees who suffered from influenza were those engaged in office work and not those who worked in the open air. The preponderance of influenza patients among the factory hands may be seen from a table prepared by Ripperger: _A. In the open air._ Occupation. Per cent. attacked. Workmen and laborers of Niederbayern 7 Railway officials in Amberg 9 Peasants in Niederbayern 11.7 Workmen in the Salzach-Correction 20 _B. In closed rooms._ Slag mills in St. Jugbert 15 Cotton mill in Bamberg 20 Cotton mill in Bayreuth 33 Sugar factory in Bayreuth 36 Aniline works in Ludwigshafen 38.8 Cotton mill in Zweibrücken 50 Tinware factory in Amberg 60 Factory in Schweinfurth 62 Gun factory in Amberg 70 Gold beaters in Stockach 80 “Many peculiar records of how individual classes of occupation have fared are obviously to be explained by the fact that the infection manifested its action in very different degrees. Thus, among the workmen on the Baltic ship-canal only those became ill who lived in the town of Rendsburg; those who had been housed in barracks outside of the city were not affected. Of the 438 lead workers of Rockhope, which is situated in a lonely valley in Durham, all remained perfectly free from the disease during the three epidemics of 1889–92.