_Odour from the Rainbow_ (Vol. iii. pp. 224. 310.).--This idea has been
traced to Bacon's _Sylva_, Browne's _Britannia's Pastorals_, Snow's
_Miscellaneous Poems_, and to a Greek writer referred to by Coleridge.
Georgius de Rhodes, in his _Peripatetic Philosophy_, mentions the same
effect of the rainbow, and quotes Pliny:
"Dico sexto, iridis effectus duos præcipue numerari. Primus
est, quod plantas, arbores, frutices, quibus incubuerit,
efficit odorationes. Tradunt, inquit Plinius lib. xii. c.
24., in quocunque frutice incurvetur cœlestis arcus, eandem
quæ sit aspalato suavitatem odoris existere; aspalato autem
inenarrabilem quandam. Terra etiam ipsa suavius halare dicitur."
In the annotations on Pliny, _in loco_, Aristotle is referred to in
_Problem. Quæst._ xii.