Mental Disease Ordinance — Lineage & Amendments
Visual diagrams showing how the Mental Disease Ordinance, No. 1 of 1873 evolved through its 11 amendments over more than 80 years. Originally enacted as the Lunacy Ordinance, it is the oldest piece of mental health legislation in Sri Lanka — and remains in force today, 153 years after enactment, with no amendments since 1956.
Amendment Flowchart
The Ordinance has been amended 11 times between 1882 and 1956. Two amendments have accessible scanned PDFs (1952, 1956). One amendment (1955) has a Parliament.lk cataloguing mismatch. The remaining 8 are pre-digital with no accessible text.
Legend: Blue = base ordinance, Orange = accessible PDF available, Light yellow = listed but source mismatch, Gray = no accessible source
Source Documents
| Act | Year | Source | Link |
|---|---|---|---|
| Lunacy Ordinance, No. 1 of 1873 | 1873 | CommonLII (consolidated PDF) | View PDF |
| Amendment No. 3 of 1882 | 1882 | Pre-digital, no PDF | — |
| Amendment No. 3 of 1883 | 1883 | Pre-digital, no PDF | — |
| Amendment No. 2 of 1889 | 1889 | Pre-digital, no PDF | — |
| Amendment No. 13 of 1905 | 1905 | Pre-digital, no PDF | — |
| Amendment No. 16 of 1919 | 1919 | Pre-digital, no PDF | — |
| Amendment No. 3 of 1940 | 1940 | Pre-digital, no PDF | — |
| Amendment No. 13 of 1940 | 1940 | Pre-digital, no PDF | — |
| Amendment No. 11 of 1943 | 1943 | Pre-digital, no PDF | — |
| Amendment No. 14 of 1952 | 1952 | Parliament.lk (scanned PDF, G5387) | View PDF |
| Amendment No. 22 of 1955 | 1955 | Parliament.lk returns "Administrative Districts" — mismatch | — |
| Amendment No. 27 of 1956 | 1956 | Parliament.lk (scanned PDF, G3157) | View PDF |
Governance Hierarchy (Ordinance Design)
The Mental Disease Ordinance establishes a governance framework centred on the Minister's regulatory authority and the District Courts' admission jurisdiction. Unlike most health legislation, no statutory body is created — instead, "Visitors" are appointed under Section 14 in an inspection role.
Legend: Blue = Minister, Purple = judicial authority, Yellow = appointed role (not a statutory body), Gray = operational roles
Ordinance Structure
The Ordinance has a flat section structure (no chapter divisions) with 34 sections grouped by topic:
Legend: Blue = general provisions, Purple = court/judicial provisions, Orange = emergency, Yellow = inspection/regulation, Green = voluntary/temporary admission (later additions)