held by its stein B in the clamp H. C is hall' a globular 1 lb. 
flask, supported by the filter stand K. Through the neck of 
C passes the tube D. C and D are joined liquid tight by the 
india-rubber collar L. A few arbitrary marks are made at 
E. The lip of C. is turned down to a beak at M. 
In the adjustment of the instrument to get the required 
value of gt. the holder C is slipped along so that the drops 
from G fall between C and D and not into D. When the 
required rate is obtained it is slipped back again. When 
such liquids as turpentol are used, a little water is poured 
between D and C to protect the caoutchouc. In all cases 
where a liquid is employed C is filled till it runs over. 
In the first experiment of which the results are giveu in 
following table, the numbers are subject to two sources of 
error : The volume filled is rather small and no allowance was 
made for the meniscus. 
In this as in all cases of SLL, care must be taken not to 
shake the instrument. 
TABLE XIV. 
intu. 
Water gt — 6 V T = 22 ° C. Radius of glass sphere — 7.4 
I. 
II. 
III. 
IV. 
No. of drops of water 
Mean 
Relative size of single 
Medium. 
required to 
of 
drops reduced 
till a giveu volumn. 
Column 2. 
to, through air == 1. 
Air . . . . - 
7)8 1 
5 b 
57.0 
1. 0 
r 
28 1 
Turpentol < 
27 
2(» | 
2G.7 
2.11 
w 
26 J 
Benzol . . 4 
7 
7.0 
8.14 
' J 
There is therefore a greater difference between the drop- 
sizes of water in Benzol and Turpentol than between those of 
