Lillian Eichler Watson,
Book of Etiquette, Volume II
“ Whenever fruits are served the finger-bowl should follow. It is always used at the completion of the dinner. The bowl is half filled with tepid water and set upon a plate. A fragrant leaf may be added to the water. The fingers are dipped lightly into the bowl, one hand at a time, and then dried on the napkin. It is a mark of ill-breeding to splash the water about, to put both hands into the bowl at once, or to wet the entire palm of the hand. Only the finger tips should touch the water. ”
