Lower manas
Mental body — concrete mind (4)
Lower manas — the mental body of concrete thought, calculation, and reasoning about the sense-world. In the Besant-Leadbeater scheme the mental body has a 'lower' (rūpa, form-bound) and 'higher' (arūpa, formless) division; this principle is the lower. Powell's The Mental Body (1927) treats this principle in the Theosophical convention as a vehicle of bright yellow tone, the colour deepening with the focus and clarity of thought.
Point 4 of 7 in Theosophy — Seven Subtle Bodies
Cross-tradition overlaps
No overlapping points are registered for this point.
Sources
Besant, The Ancient Wisdom (primary_canonical)
Besant, The Ancient Wisdom, ch. III, 'The Astral World,' describes the lower mental activity bound to concrete experience and its relation to the astral life; the lower-manas label is a Theosophical synthesis rather than a separate biological body.
A.E. Powell, The Mental Body (secondary)