334 Prof. E. N. Horsford on Glycocoll, 



Dumas has suggested that the compound produced when an- 

 hydrous sulphuric acid is conducted into an atmosphere of dry 



NH 3 , S0 3 =HO, NH 3 ,SO 



>/ 



Kane on the other hand, suggests that it be regarded as hydra- 

 ted sulphuric acid, in which one atom of oxygen is replaced by 



one atom of amidogen. 





NH„SO„=S $2* lu 





3? ^^3 



£NH 



C 4 H 4 N0 3 =NH 2 ,C 4 H a O 



>/ 



'J 



4 "4 x, ^3 ilXA 23 ^4 AA 2 ^3* 



4 Or as wa& acid in which one atom of oxygen is replaced 



by amidogen. 



C 4 H 2 4 = atom of malic acid. 



C 4 H 4 N0 3 =C 4 H 2] °| 



5. If doubled it becomes asparagin. 



2(C 4 H 4 N0 3 )=C 8 H 8 N a 6 . 



Since the atom of water in crystallized glycocoll is replaced 

 by both acids and bases, it may not be impossible to obtain from 

 glycocoll a body identical in elementary composition with aspar- 

 agin. Instances of metamorphosis of this description are not 

 infrequent in the records of chemical investigation. 



The conversion of styrol into metastyrol by heat* and by vibra- 

 tory motionf in connection with machinery, is among the most 

 remarkable. The spontaneous change ofcyanate of ammonia 

 into urea :| of aldehyd into metaldehyd :$ of hydrated cyanic acid 

 into cyammelide : || and the reconversion by distillation of cyam- 

 melide and cyanuric acid into cyanic acid : the change of alloxan 

 into alloxanic acid : the metamorphoses of phosphoric acid by 

 heat, and other similar phenomena by contact with alkalies, lend 

 support to the supposition, that it may yet be possible to effect 



SOme of thfi mptamnml-n-icQo oKnirn a^^n^ct^A nr snme WnlCil 



follow. 



ested — or 



6. It would not be more unexpected, than was the artificia^ 

 preparation of urea, to make glycocoll by combining wea ana 



grape sugar 



2i^J!l?5 + C « H « °- 



Urea. Half atom of grape sugar. Hydrated glycocoll. 



7. The circumstance that in the preparation of the bisulphite 

 glycocoll and ammonia, fumaric acid is driven out, leads 



? Blytheand Hoffman, Liebig's Annalen, Bd. Jiii, s. 311. 



t Sullivan, Phi!. Mag., 1845 



t Wohler. § Liebig. jj Liebig and Wohier 



