60 Proceedings of Royal Society of Edinburgh. [sess. 
Summary. — (1) The amides show no acid character, and ac- 
cording to this view they are better represented by the formula 
R - C - NH 2 than by R - C - OH. 
II ' I! 
0 NH 
(2) The non-conductivity of the amides in aqueous solution is 
a good criterion for their purity. 
(3) The viscosity of pure aqueous solutions of acetamide and 
carbamide follows the formula rj x = A*, where rj x is the viscosity 
of a solution of concentration x and A is a constant. 
(4) A comparison of the viscosities and conductivities of a 
solution of potassium chloride, to which varying amounts of an 
amide were added, shows that the two are very closely related. 
( Issued separately February 6 , 1904 .) 
