Published information on the physical constants of the monoglycerides of the lower fatty acids (c1-C~) is neither plentiful nor in good agreement among different authors. With the exception of monacetin, these esters have received much less atten tion than have the higher ones. Densities of the monoglycerides of the lower normal fatty acids (formic acid excepted) have been reported by Abderhalden and Eichwald." Similar constants ...