138 G. H. KNIBBS. 
Relative Fluidities of Distilled Water 0° to 50° C., computed fi 
the efflux measurements of various investigators. | 
Temp. Psl816. Gd186l. Gel861. 841876. Gil879. Gii1879. Sl41881. Walsh 
o°c. 1000 1000 1000 1000... oes 1000" 
5 ott. s2008 118s Hi6.... “i sk oe 
10 1363 1364 1373 1366... -... 1363 3a 
15 1557 1582s 1575 1566 15572 15632 ... 1568 
20 1771 1802 1791 1775 17652 1767 1795 
25 1992 2053 1990 1983 “sda 1996: a 
30 2226 2272 2207 2218 2227s .. 2213 2263 
35 2479 2535 2452 2457 95115 2494: 2509 
40 2738 2781 2736 2705 27242 2728: 2719 2769 f 
45 3010 3041 2985 2957 se A . . 
50 3285* 3337 3279 3218 - 
— * Denotes that the value is extrapolated. The small numbers : 
4 etc., denote the number of experiments on which the value is based. 
Pe Poiseuille: Gd=Graham, tube D: Ge = Graham, tube E: S=Sprung 
Gi=Grotrian, tube 1: Gii = Grotrian, tube 2: Sl= Slotte : w= Wagner 
24. The relative fluidities of distilled water for temperature 
above 50° C.—So far as I am aware, only two observers have gre. 
measurements from which the fluidity for temperatures above 50°C. ; 
can be ascertained, viz. Graham and Rosencranz. Meyet, who 
reduced Rosencranz’s data, concludes that above 50° the sui 
is related to the temperature by a linear function, viz. 
fr=fo (1+ 47) | 
but Graham’s results do not tend to confirm this view. In# 
table hereunder, the design of which is to illustrate this point, 
first column Px contains the values of the fluidity obtained 
extrapolation from the results of Poiseuille’s experiments, form 
(37): the second and third columns those of Graham with tu 
Dand E£, his measurements being made at the temperatures qu? : 
the final column Rx, contains the values roughly interp® 
from Rosencranz’s measurements. The fluidity at 0° C. is OEE 
as 100. 
e temperature ietareads- were irregular and as the rong 
not be closely represented by a curve without PP ERE | 
interpolations were possible 
