The attorney-general’s opinion was asked by the Industrial Board in this case, for the purpose of determining at the beginning of its work the question of its powers not only in relation to matters not covered by legislation but also to those covered in part by law. The essential part of the opinion follows: “It seems to me to be entirely beyond question that the industrial board has power to adopt rules and regulations upon subjects of which the statute already treats. The statute itself makes mandatory provisions for many safeguards and then makes provisions that additional safeguards may be required by the industrial board. There is nothing in the letter of the statute nor in its manifest intent to confine the jurisdiction of the industrial board to such few subjects only as are not expressly legislated upon by the statute itself. Such an extensive limitation upon its powers would be manifestly absurd and far foreign to the evident purpose of the Legislature in enacting additional legislation for the protection of the lives and health of employes in factories.” The attorney-general’s opinion further states that the legislation does not offend any constitutional provisions. =SANITARY SURVEY OF THE OHIO= The Public Health Service, under the direction of Surgeon-General Rupert Blue, has undertaken a “sanitary survey” of the streams which feed into the Ohio river. It is proposed to test the waters of these streams in order to determine scientifically to what distances the contamination of sewage is carried by flowing water. The object of the survey is to establish standards of pollution beyond which no community will be permitted by the federal government to trespass in dumping sewage into streams. This is the first time that the federal government has ventured to invade the local police powers of municipalities, except in times of great extremity, such as during the yellow fever epidemics along the gulf coast. The survey of the Ohio Valley will probably result in the erection by the government of “purification plants.” It has been suggested that such legislation will be deemed constitutional under the law prohibiting the transportation of disease germs in interstate commerce. =OREGON COMMISSION AS STRIKE ADJUSTER=