628 



6. ARSENICALS 



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M W W 



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r c ^ ,^ 





CO o o as 



^^ 



OrH^O-H^ S<J?N O 



'N O O O O 



< <(, < 



5 s 



'C "ft 



<: o 



<aj c5 c3 c5 



Qs « tf (i5 



2 ^ 



tf K 



e -^ .§ .§ 



I^ISa 



^ ^ >H 



c3 A 



