自本世纪40年代以来,自采用酸类处理的方法后,牙形石分析工作获得了很大的进步。古生界大量碳酸盐岩中丰富的牙形石化石标本便是靠各种酸处理的方法获得的。从过去的工作中我们常常感到用桶浸泡的方法并不完全令人满意。所获得的牙形石标本,往往破损较多。如何使分析的质量得到进一步的提高,我们进行了多种浸泡方法的实验。最后,在84年夏的工作中,采用了“塔式分析方法”,对同一样品做了对比分析。所得结果尚较令人满意。其数据如下: Since the 40’s of the last century, great progress has been made in the analysis of conodont since its use of acid treatment. A large number of carbonate rocks in the Paleozoic abundant conodont specimens are obtained by a variety of acid treatment methods. From the past work we often feel that the method of soaking buckets is not entirely satisfactory. The obtained conodont specimens often have more damage. How to further improve the quality of the analysis, we conducted a variety of immersion experiments. Finally, in the summer of 84, a “tower analysis method” was used to make a comparative analysis of the same sample. The result is still more satisfactory. The data is as follows: