. It will be seen that there is not the slightest indication of a departure from a linear relation between
and
up to the value
, which corresponds to a value of
of .4439 (see drop No. 58, [Table X]). Furthermore, the scale used in the plotting is such that a point which is one division above or below the line in [Fig. 5] represents in the mean an error of 2 in 700. It will be seen from Figs. [5] and [6] that there is but one drop in the 58 whose departure from the line amounts to as much as 0.3 per cent. It is to be remarked, too, that this is not a selected group of drops, but represents all of the drops experimented upon during 60 consecutive days, during which time the apparatus was taken down several times and set up anew. It is certain, then, that an equation of the form (15) holds very accurately up to
