As a Chair of the People's Commissariat, Kasym not only organized numerous ethnographic research expeditions within Kyrgyzstan, but coordinated and took part in joint expeditions from other Soviet Republics. His many publications were based on the analysis of the findings of such expeditions. Based on such analysis he introduced such fundamental trends in Kyrgyz linguistics as Textual Criticism (Textology) and Dialectology. As a result of his dialectological research he created an orthographic system. His analysis of Moldo Niyaz's "Datka Aiym" became the first sample of a textual study. His contribution to the formation of Kyrgyz linguistics was tremendous.