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 English, German, French or Spanish revealed a name-letter effect for the Roman alphabet as well as for Cyrillic. The researchers concluded mastery pleasure is not the principal cause of the name-letter effect. In a follow-up study Hoorens, Nuttin, Herman and Pavakanun tested the strength of the name-letter effect among elementary-school children, in a cross-sectional experimental design involving Flemish and Hungarian second, fourth, and sixth graders. Instead of finding the name-effect to decrease with age as might be expected, they found it increased, thus proving that mastery pleasure is not the principal cause. They also investigated name-letter effects in bilingual Thai