254 
MR. J. J. MANLEY ON THE APPARENT 
cooling liquid proceeds not in one perfectly and steadily decreasing flow, as might at 
first be expected, but in the form of a surging stream. It is hoped that further 
experimental evidence will reveal that which is now obscure. 
We now briefly refer to the results set forth in Tables VI. and VII. Comparing 
the corresponding data of the two tables, very distinct differences are at once 
apparent; but that which claims our immediate attention is the want of agreement 
Ijetween the two final results; the first of these indicates an apparent increase in 
weight = '027 mgr., and the second an apparent decrease = '067 mgr. As these 
apparent changes in weight constitute, relatively speaking, large discrepancies of a 
wholly contradictory character, we began to suspect that the marked irregularities 
were due to the presence of some hitherto unlooked for variable; but before deciding 
upon any other course, additional comparisons of X and Y were efiected at intervals 
for some days longer ; the large fluctuations in the relative weights showed that it 
would be useless to further prolong experiments in this direction. Curve No. 4 
(fig. 3) represents some of the irregular results obtained from the additional 
weighings. 
At this period of the investigation we obtained a clue so valuable that we were 
enabled to perceive the probable cause of the frequent changes in the relative weights 
of X, Y and their contents. During an earlier experiment, not previously mentioned. 
