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NOTES.
187
The flash was frequently seen on the same flower two or three times in quick succession; but more commonly at intervals of several minutes: and where several flowers in the same place emitted their light together, it could be observed at a considerable distance.
This phenomenon was remarked in the months of July and August at sunset, and for half an hour, when the atmosphere was clear; but after a rainy day, or when the air was loaded with vapours nothing of it was seen.
The following flowers emitted flashes, more or less vivid, in this order:
- The marigold, galendula officinalis.
- Monk's-hood, tropœlum majus.
- The orange-lily, lilium bulbiferum.
- The Indian pink, tagetes patula & erecta.