Opiologia: or, A treatise concerning the nature, properties, true preparation and safe vse and administration of opium : For the comfort and ease of all such persons as are inwardly afflicted with any extreame griefe, or languishing paine, especially such as depriue the body of all naturall rest, and can be cured by no other meanes or medicine whatsoeuer. Dedicated to the illustrious, high and mighty lords, the estates generall of the vnited prouinces in the Netherlands. By Angelus Sala Vincentinus Venitus. And done into English, and something inlarged by Tho. Bretnor. M. M.