330 Prof. H. E. Armstrong and others. [Jan. 1, 



Table A. — Hydrolysis of Urea in M/5 Solutions containing Acidic Substances. 





Percentage of urea hydrolysed. 



Time 





In the 





In the 





In the 





In the 





In the 



(mins.). 



Alone. 



presence 



of 

 phenol 

 M/25. 



Alone. 



presence 



of 

 phenol 

 M/5. 



Alone. 



presence 

 of 



resorcinol 

 M/25. 



Alone. 



presence 

 of 



resorcinol 

 M/5. 



Alone. 



presence 



of 

 guaiacol 

 M/25. 



5 



10 -8 



9 -2 



9-9 



7-1 



10 -6 



9 -4 



9-5 



6-5 



11 -8 



9-2 



10 



17-7 



15 -5 



15-8 



11 -9 



17 -7 



16 -2 



15-3 



12-6 



17 -1 



15 -3 



15 



23 -8 



21 -2 



20 -6 



15 -9 



23 -3 



22 -4 



20 -8 



17 -6 



22 -7 



20 -6 



30 



37 -4 



35 -6 



33 -9 



26 -5 



36 -7 



37 7 



32 -9 



30 -9 



36 -0 



34 -8 



45 



49 -5 



47 -8 



44-9 



35 -3 



49 -2 



50 -6 



43 -2 



42 -6 



47 -4 



46 -2 



60 



60 -8 



58 -4 



54 -2 



43 -4 



59 -1 



61 -2 



52 -5 



53 -3 



56 -7 



56 -9 



75 



69 -7 



68 -8 



63 -5 



50 - 7 



67 -6 



71 -4 



60 -5 



63 -2 



65 -8 



66 -4 



90 



78 -2 



78 -2 



71 -5 



57 -7 



76 -5 



81 -0 



68 3 



72 -1 



74 -2 



75 -1 



120 



94 '4 



94 -4 



86 -0 



71 - 2 



90 -9 



95 -6 



81-6 



89 9 



88 -2 



90 1 







In the 





In the 





In the 





In the 





In the 





Alone. 



presence 

 of boric 

 acid 

 M/25. 



Alone. 



presence 



of 

 glycine 

 M/5. 



Alone. 



presence 



of 

 glycine 

 2M/5. 



Alone. 



presence 



of 

 glycine 

 4M/5. 



Alone. 



presence 

 of 



asparagine 

 M/5. 



5 



9-7 



3-0 



30-5 



11-1 



9-8 



12 -0 



10 -o 



10 -8 



8-3 



8-8 



10 



16 -5 



6 -4 



16 -5 



19-1 



16 -5 



21 -4 



15 -5 



21 -0 



13 -4 



14 -6 



15 



21 -3 



8-8 



20 -5 



27-8 



21 -6 



29 -0 



21 -0 



29-4 



17 -2 



22 -6 



30 



34 -3 



15 6 



33 -2 



46 -5 



33-9 



48-1 



33 -4 



49 4 



27 -7 



39 -2 



45 



44 -9 



20 -9 



44 -4 



61 -1 



44 -7 



63 -7 



44 '7 



65 -5 



36 -2 



52 -8 



60 



53 -6 



25 '8 



53 -5 



73 -5 



53 -0 



75 -9 



55 -5 



78 -7 



43 -9 



64-5 



75 



63 -7 



30 -1 



62 -2 



85 -0 



64 -3 



87 -7 



63 '2 



91 -4 



52 -2 



74 -6 



90 



71 -5 



35 -0 



69 9 



94 -4 



72 -0 



96 -5 



72 -4 



101 -o 



57 -4 



83 -4 



120 



86-3 



41 -8 



84 -2 



99-7 



87 -3 



98 -9 



85 -5 



101 -4 



69 -8 



97 -1 



Table B. — Hydrolysis of Urea in M/5 Solutions containing Quinol and 



Monomethylquinol. 





Percentage of urea hydrolysed. 



Time 















(minutes). 





In presence 





In presence 





In presence of 





Alone. 



of quinol 



Alone. 



of quinol 



Alone. 



monomethyl- 







M/500. 





M/25. 





quinol M/25. 



5 



10 -4 



3-8 



9 9 



2 '3 



9-0 



5 "6 



10 



17 



4-2 



16 9 



2 -1 



14 3 



8 1 



15 



22 -5 



4 2 



22 -4 



1 9 



18 -3 



8-7 



30 



35 6 



4 2 



36 -5 



1-6 



30 3 



9-5 



45 



46-4 



4-2 



48 '7 



1 -6 



39 -4 



10 -1 



60 



56 -0 



4-0 



58 -6 





48 -2 



10 9 



75 



64 -7 



4-2 



67 -8 



1 9 



55 '6 



11 -8 



90 



72 -1 



4 



76 -5 



1 -4 



62 -8 



12 3 



120 



85 -0 



3-8 



91 9 



9 



75 -5 



13 3 



