In England the Open Air Schools were made possible through the work of the local educational authorities and co-operation of dispensaries for treatment and care of tuberculous children. As in other countries, general legislation for the control of tuberculosis has had considerable bearing on the Open Air School situation in England. Among the legislative acts should be mentioned: (a) The Act of 1911 providing building grants for the establishment of sanatoria, dispensaries and other auxiliary institutions. (b) Compulsory notification of tuberculosis, etc. Notification of tuberculosis, for instance, besides bringing to notice of the school medical officer cases of tuberculosis which might otherwise not come before him until a late period, serves in many cases to keep him informed as to "contact cases"--cases of children in contact with communicable tuberculosis. At Burton-on-Trent a system was instituted for periodical examination of school children who are either members of a family in which there is or has been a case of pulmonary tuberculosis, or who are attending school while residing in houses in which there is an existing case of this disease. All notified cases of tuberculosis are visited by the Assistant Medical Officer of Health, who is also Assistant School Medical Officer, and the names of any children living in the house, or related to the case, are ascertained, together with the school they are attending. These names are entered in a special register and when the pupils of a school, at which any of these children are attending, are examined, a special examination is made of the latter. This examination is repeated two or three times a year. In another part of England a special letter is sent to the occupants of all houses from which the disease has been notified, calling attention to the special importance of early detection of tuberculosis in children, and asking that the children should be brought to the school clinic for examination. In Lancashire the Medical Inspector calls on the Medical Officer of Health and obtains a list of names of persons suffering from tuberculosis, so that the children, if of school age, may be examined. At Newcastle-on-Tyne all children exposed at any time to infection are kept under observation and re-examined. The re-examination continues even after fatal termination of the tuberculosis case with which the child was in contact.