Visible Absorption Bands of Colorless Liquids and Their Relation to Infra-Red Bands

The absorption of ten representative organic liquids has been studied in the visible spectrum by photographic means. Cell lengths up to 6{} meters were employed. The near infra-red spectra of these same substances have been obtained. A good correlation of the bands of the two regions has been secured; the bands of the visible region seem to be higher members of series previously detected in the infra-red.