But it is from the textile trades that the great mass of the evidence is derived. The cotton industry of Lancashire and the wool and worsted industries of the West Riding of Yorkshire, built up as they are on the labour of children and young persons, offered a much wider field than the non-textile trades, and here, where the girls join their Trade Union directly they are working full time, there is much more class consciousness and reflection upon industrial conditions. Consequently evidence as to these industries, together with that of the clothing trade, is derived mainly from the Trade Union officials, particularly from the Sick Visitors of the Insurance sections, and from meetings of operatives called together for the purpose by the Trade Union secretary. In the course of the inquiry I visited a number of mills, both spinning and manufacturing, and thus gathered a good deal of information from employers, managers, and overlookers. A certain number of doctors were also visited, and some of these supplied much valuable evidence, but it must be remarked here that many doctors, possibly from stress of work, fail to note the relation between occupation and disease except in extreme and obvious cases, particularly in towns where one main industry occupies a large proportion of the inhabitants, and where one imagines deductions as to occupational disease and tendencies to disease could be most easily made. In addition to the engineering and textile trades I have collected evidence from a few miscellaneous industries in the various towns I have visited, generally from "good" employers, who have made some study of industrial fatigue or whose interest in the welfare of their employees had directed their attention to some of the problems under discussion. The evidence from the clothing trade was collected at Hebden Bridge and from various other towns where wholesale tailoring is merely a subsidiary industry. The conditions in Hebden Bridge due to the ever-present shortage of female labour make these clothing operatives the aristocrats of their trade, so that the general results of industrial work here had to be correlated with the evidence from the clothing trade in other towns. GENERAL CONCLUSIONS _Hours._--The evidence to be considered under this heading is concerned with various factors: the total number of hours worked each week, the length of the spells, and the number and length of the pauses for rest and meals, as well as the time of employment, _i.e._ day or night work.