Arrijerican Jour7?M7 of ConrAo7^ay\^ 7^70. Plxrte 4^ 



/7a^ 30 



v7 \'i^ 



1 



11 /* 



8"b 



-imm 



12 



J) all, On Sipho/ixt^'i^ antX^ (ra^__:r,rLX-a - 



