John Trapp on Job 6:16

Verſe 16. Which are blackiſh by reaſon of the ice] Or froſt, a black-froſt we call it, which deceiveth thoſe that tread upon it. Or if hard enough to beare up paſſengers it promiſe to be a ſtore-houſe of preſerving ſnow and water againſt the ſcortching time of Summer, yet there's no truſting to it: for theſe waters as they are in winter lock'd up with froſts, ſo they will be in Summer exhaled, and dried up by the Sun.