The abstracts written in Korean presented at the Fall Meeting of the Korean Earth Science Society held at the Kangwon National University in October, 1999 were reviewed. They are dotted with foreign expressions and obscure wordings as well as difficult expressions and very long sentences. The foreign expressions are those originated from Japanese, English, and Chinese expressions and words. Several suggestions are made to increase the ability to write good abstracts and articles in Korean on the earth sciences. They include reading many books on natural sciences for general readers, writing sentences not exceeding 20 words, critical reading by professor or colleagues, and open mind to accept their criticisms. The authors should pay attention not to commit various errors shown in Table 2 in this paper.