Scotland: General Register of Lunatics in Asylum

Old Scottish Genealogy and Family History have indexed the first 14 volumes of the General Register of Lunatics in Asylum.
From the National Records of Scotland series MC7, the volumes in the series open are for 1858 to 1915,  The register includes every patient admitted to an asylum in Scotland in this period as well as nearly 4000 patients in asylums on 1 January 1858. It covers 180,731 admissions to asylums, involving 115,900 individual patients. 955 of them have last name Reid -- if only there were DNA test results!
The free index browsable by surname is fairly detailed. You can order an image of the original for a fee.
http://www.oldscottish.com/asylum-patients.html

via a retweet from Helen V Smith