TRANS. R. I. A. Vol. XXIII. 



SCIENCE, p. 181. 



Plath VIII. 



ten? 



NfiMSIiSkS^SB^il!^ Stfh MbSBS^IAt^Am 



^V>>>V^V>V>X%\%VkVk.VVVi 



Ll|li!l, 



i 'r 



1 1 M - 



ll I'll 



1 



