























Phil. Mag. 



Ser. 6, Vol. 13, PI. I 

















































V 



■ via* 







Fi 7 .5 



Su 



>cdvph> I 



row. 



























/ 



"~^X 









































X 







































^ 



XI 



\ 







































^X 



N 



\ 



\ 



\ 



































i St**—^. 



. X, 



^x 



9tf\ 



\ 



\ 



2t 



w 







j< 



>o 







too 



















k> 



\ 

 s 





\ 



































r 



X 



\ N 



X 



\ 



\ 



\ 





































\ 



X 



s> 



\ 



V 



\ 





































\ X 



X 



^ 



\ 



\ 



\ 

























.6 



£ 











X 



\N 



X 



\ 





























r 











X 



^ 



;> 



\ 



X_ 







































X 



\N 



X 



v 







































X 



X 



\ 



X 



X 

























2 







1 — • ( 



— S 



-wo 



Ay 





\ \ 



N 



\ 









T=1 



>2lg 



"mm 

















^ 















X 



S > 







1 



=24- 



Wffi 























-— - B 



-350 











X 



5 



s 



X^ 



=3K 

 = 39 



] Oc/r 

 7 tqr. 















■ 1 





















\ 



X 



xr 



-<h 



fi?r. 









































x r 



-5535gr. 























































■ 









^ 



9 .6 



Su 



edtA. 



?^ Z 



'OW. 









































































/' 



,"". 



-"" 













--- 



_ 



























,' 



























r=> 



627 



ir/mr 



2 



















/ 













— <- 



















. 





































