Organic Bodies containing Metals. * 257 



combine, be occupied indifferently by an electro-negative or an 

 electro-positive element ? This question, so important for the 

 advance of our knowledge of the organic bases and their con- 

 geners, cannot now long remain unanswered. 



If the views which I have just ventured to suggest should be 

 as well borne out by future researches as they are by the facts 

 already known, they must occasion a profound change in the 

 nomenclature of the extensive series of compounds affected by 

 them : I have not, however, ventured to introduce this new 

 system of nomenclature, even in the case of the new bodies 

 described in this memoir, since hasty changes of this kind, unless 

 absolutely necessary, are always to be deplored. In accordance 

 wi^i the suggested view of the constitution of the organo -metallic 

 compounds, the following plan of nomenclature would probably 

 be found most convenient. 



Arsenic Compounds. 



(C^H3)2As . . . Bimethide of arsenic. 



(C^ H^f AsO . . Bimethoxide of arsenic. 



(C^ Wf AsO^ . . Bimetbarsenic acid. 



■ (C^ Hy AsO^ + KO. Bimetharseniate of potash. 



Zinc Compounds. 



(C^H^jZn . . . Methide of zinc. 

 (C4H^)Zn . . . Ethide of zinc. 

 (CIO H") Zn . . . Amylide of zinc. 



Tin Compounds. 



(C^H^jSn . . . Methide of tin. 



(C^H^jSnl . . . Methiodideof tin. 



(C<H'^)Sn . . . Ethide of tin. 



(C^H^jSnO . . . Ethoxide of tin. 



(C'*H^)SnCl . . Ethochloride of tin. 



(C^ H^) SnO SO^ . Sulphate of ethoxide of tin. 



(C'OHii)Sn . . . Amylide of tin. 



(CioHii)SnO . . Amyloxide of tin. 



Antimony Compounds. 



(C^ Wf Sb . . . Termethide of antimony. 



(C^ H^)^ SbO . . Quadromethoxide of antimony. 



(C^H^)3Sb . . . Terethide of antimony. 



(C4 H^)3 Sb 0^ . . Terethobinoxide of antimony. 



Mercury Compounds. 

 (C^ H^) Hg . . . Methide of mercury. 

 (C^ H^^) Hgl . . . Methiodide of mercury. 



