100 ROYAL SOCIETY OF CANADA 
Itis evident, from a glance at the accompanying curves plotted from 
experiments with a cylinder oil, that we are dealing with quite different 
sets of molecular forces when fiow takes place through these two forms 
of outlet. 
180 Sec 
170 Sec. 
SMALLER VISCOSIMETER. 
Chart of curves obtained with Brook’s 160 Sec 
cylinder oil. The experimental numbers 
obtained are indicated on the curves. 



