rd 



Journal of Microscopy 3^ Ser.Vol. S, Plate 10 









iffmn 





Si!^ra7!^ili:??77yi/s {^/^a^z^li^^ny. 



^- //a/n^^ 6>/?a^ /^/. .S. ^zi^ '/jar K/e/. 



/^/'/rM/ysSc 



