gleam

card 1 of 10 · context meaning

What does 'gleam' mean in this sentence?

The Pepper-trees live in Italie; the ſhrub of Caſia or the Canell likevviſe in the Northerly regions; the Frankincenſe tree alſo hath been knovvne to live in Lydia: but vvhere vvere the hote gleames of the Sunne to be found in thoſe regions, either to drie up the vvateriſh humor of the one, or to concot and thicken the gumme and roſin of the other?