Creosote removed; the "heavy oil", which sinks; and the "anthracene oil", which when cold is mostly solid and greasy, of a buttery consistence. Creosote refers to the portion of coal tar which distills as "heavy oil", typically between 230–270 °C, also called "dead oil"; it sinks into water but still is fairly liquid. Carbolic acid is produced in the second fraction of distillation and is often distilled into what is referred to as "carbolic oil". Commercial creosote will contain substances from six groups. The two groups occur in the greatest amounts and are the products of the distillation process—the "tar acids",
Name-letter effect analysis of a large database of charity donations revealed that a disproportionately large number of people donate to disaster relief following hurricanes with names sharing their initial letter (e.g. Kate and Kevin following Hurricane Katrina). Studies that investigate the impact of name-letter matching on bigger life decisions (where to live, whom to marry, which occupation to take on) are controversial. Systematic interest in the letter preference began in 1959 with brand-preference studies by researchers Mecherikoff and Horton. These tried to find the relative appeal of letters for use in package labels. In an extension of the studies, subjects were asked