00762nas a2200109   4500008004100000245004200041210004200083260000900125520040200134100002200536856009400558       1915                        eng d00aÜber die kleiderlaus tötende mittel0 aÜber die kleiderlaus tötende mittel  c19153 aExperiments show that lice treated with certain chemicals are often mistaken for dead when they are really not. Heat surpasses all chemicals for treating clothing and equipment. Of a number of protective chemicals experimented with, the ethereal oils caused dispersal, but not death, the phenol series and their ethers, and naphthalene proved fatal if volatitility and time exposure were suitable.1 aFränkel, Sigmund  uhttps://phthiraptera.myspecies.info/content/%C3%BCber-die-kleiderlaus-t%C3%B6tende-mittel