Yaws was treated with mercuric chloride (labeled as Corrosive Sublimate) before the advent of antibiotics. He made discoveries relating to a mercury chloride called corrosive sublimate. Chemicals such as arsenic, strychnine, corrosive sublimate, aconitum and prussic acid were all used. Even at subzero temperatures, snowflakes are ephemeral because they sublimate. The Tantric aim is to sublimate (rather than negate) reality. Iodine crystals will sublimate if exposed to air for long periods of time. Dry ice will sublimate leaving behind no residual abrasive. Temperature-controlled lyophilizers were used to sublimate the acetic acid. Kieserite commonly occurs in marine evaporites and rarely in volcanic environments as a sublimate. This combined with dry air will cause snow to sublimate. Ice will sublimate much more if there is more surface area. Then the frost on the clothes will sublimate into the air, leaving the items dry. More recent observations indicate that the ice at Mars' south pole is continuing to sublimate. It can make some snow sublimate, leaving the top inch or so less dense. He believed that through "losing yourself" in art one could sublimate the Will.