, written in dutch, to the illustrious royal society of london, by arnold marcel (nephew to the late mr. anthony van leeuvenhoek, f. r. s.) communicated by the revd. dr&#..

, written in dutch, to the illustrious royal society of london, by arnold marcel (nephew to the late mr. anthony van leeuvenhoek, f. r. s.) communicated by the revd. dr. j. t. desaguliers, f. r. s