Abstract
'Chong Myung So(聰明素)' is Chinese patent medicine, which is used for nervous prostration and neuritis in Korea. This preparation consists of 18 kinds of powdered crude drugs. For the identification of individual ingredients in such powdery mixtures, microscopic method may advantageously be used as it requires only a small amount of specimens. In this study, it is demonstrated that the microscopic method is very effective for the identification of 18 crude ingredients including in 'Chong Myung So'.