Fis. 3. 



,„,c,rercnce pa,.er„s formed by na.un,, IjS'i' rlrJ^Sc^'^.^^K^nS-Sf in' 



co.P.e. .... . ^^!,;BfEBE^-^^t^^^^MB 



; lor I he 



j/inuiihs 



stx'n 





of(/l)0 ,(fi)90 ,(0 180 and(Z)) 



to be linearly polarized in all cases ■ 



directions. Implied by the extent a..^ ""- f \,, 



considerable even at this depth. The P'-^"^^ °' P^'.j jms Nvhcrc me - . „^ . 



vibration and the horizontal) "leasurcd in uncroppccij^^ ^ \,(uU)0 (no till) and 



vertical and honzontal refe^^^^ ^ .-g. Tri-X film. Sun's altitude 52 . 



