Labs
Plate II — Daylight
The daylight specimen — the heart keystone, four circadian registers, six families, the chart canon, the annotated reading room.
The daylight specimen: the heart keystone figure, the four circadian registers side by side, the six colour families (named from nature after Werner's Nomenclature), the chart canon, and the annotated reading room — five lamps: Light, Line, Life, Measure, the Human.