Chemistry and Physics. 117 
sodium while still moistened with naphtha. me author wernt an alloy 
of 1 part of sodium with 6 parts of tin which is crys talline, silver-white, 
ish color intolerable odor. The contents of the flasks are 
pt riser ieto: a > flask filled with ether, and allowed to remain one 
or two hours with frequent agisation. The dark yellowish brown colored 
solution is then to be pour red into a bottle filled eae carbonic acid, and 
permitted to stand from half an hour to an hour. During this time, a 
brownish substance separates, which when sollented on a filter dries to 
a white mass without odor. The terials solution now contains five 
or six organic radicals, and a number of iodine compounds: these last 
namely, 
Stannethyl, : - - Sn Ae 
Methylenstannethyl, . - Snz Ae2 
Elay|stannethyl, - : Sna Aes 
Acetylstannethyl, - : Sna Aes 
adical, - : - - Sne Aes 
Methstannethyl, . : - Sn2 Aes 
Ethstannethyl, : Sn4 Aes 
the oxyd is a white sts without taste or 
Elaylstannethyl is a colorless oily liquid ‘of density 1-410; 
is a snow white amorphous powder which is precipitated from - 
na 
by water from the alcoholic solution. The author describes a colorless 
and crystalline ites chlorid, bromid, and iodid of this radical ; they 
are all anhydrous 
