Contents: I. On Dating the Palatalizations; II. Description of the Palatalizations; III. Some Views Concerning the Progressive Palatalization; IV. An Interpretation of the Relative Chronology; Appendix: Slavische c (ts), z (dz), s aus den unter dem Einflusse vorangehender Vokale palatalisierten k, g, h (ch), by J. Baudouin de Courtenay; Bibliography. Originally published by Mouton & Co., now sold by Slavica.