These conditions are bad enough in themselves, but the most serious feature of the situation is the lack of responsibility and care in placing women and girls out in employment. The majority of the homes investigated showed absolutely no sense of their duty and responsibility in this matter. Only one sixth of them refused to place girls in situations where their morals would be seriously endangered. Many of them were perfectly willing to supply girls to work in houses of immoral character.[260] There was also a great deal of carelessness in the investigation of addresses to which girls were sent. Many of the addresses reported by the societies were found to be fictitious, many were false, that is, the girls had never been there, and some of them were admittedly immoral resorts. It is encouraging to note that since the investigation of the Commission vigorous measures have been employed in correcting these evils, and conditions have greatly improved. The case of the immigrant homes and aid societies is a remarkable illustration of the eternal vigilance which is necessary to prevent exploitation and corruption from flourishing, even in connection with professedly benevolent agencies, when plastic material is furnished in such abundance as exists in the immigrant body.[261] The effects of immigration upon the religious life of the immigrants and of the United States constitute a great field of research which has been surprisingly neglected, perhaps because of the difficulty of securing reliable data and establishing definite conclusions, perhaps because it has not seemed of sufficient importance to warrant exhaustive study. One result which has certainly followed the immigration of the nineteenth century and the beginning of the twentieth is a vast increase in the number of denominations and sects organized in this country. The position of the Roman Catholic Church as a product of immigration is too obvious to be dwelt upon. The predominance of this form of belief among the Irish of the first half of the nineteenth century, which more than anything else motived the Native American and Know Nothing movements, has been maintained to a certain extent among the Germans, and in later days among the Italians and Slavs.[262]