322 G. p. BIDDER 



So that, with F = ISO, 



if V = 8-5 ; x = X = -251, P = 112 ; 

 V = 9-0 ; x = X= -258, P = 126 ; 



the latter being acceptable values. On the other hand, we 

 may ascertain what error is indicated in F, if we assume that 

 in healthy life x was -28 cm. as suggested above, and that P 

 (cf. p. 306) was exactly proportional to the pressure of 370 + 25 

 found by Parker in the 35 /u spherical chambers of Stylo- 

 t e 11 a : 



The chambers of Leucandra being cylindrical and 54/x 

 in diameter, 



P = (370 + 25) x^x||= 120 + 8. 



by assumption a; = -28 ; 



u /i^\ j;, 4 y 4 8-84 -_^ 



by(14) f=-._ = gx.-j^=150. 



The diminution of viscosity with warmth would reduce 

 F from 180 at 15° C. to 150 at 22" C. This is no unlikely 

 temperature for the Porto Militare in the summer, so that the 

 investigation shows the data in harmony with each other and 

 with the theories of the paper. 



The arithmetical coincidence suggests that the probable 

 errors of the observations are overstated. The errors could 

 not be calculated statistically, and I could not estimate them 

 at smaller figures. I much regret having been unable to 

 claim greater exactitude. 



