抄録
The variational calculus method used in a previous paper is applied in §. 4 to the study of Love waves propagating along a free surface of a semi-infinite elastic medium, in which the density and elasticities are changing exponentially with depth. The method is also applied to the study of Love (in §. 2) and Rayleigh (in §. 3) waves in a uniform superficial layer upon a uniform semi-infinite medium. In §. 5, is shown a trial function which is useful in the study of Love waves in the case when the substratum is perfectly rigid.
