30 



Mr Richardson, Note on the Diffusion 



I 



II 



III 



IV 



V 



Table 



Temperature 

 Centigrade 



tjP 1 



(Pv-PJtIP, 



(P^-P^t/P, 



XXII 



300° 



•224 

 •286 

 •366 

 •503 



6-72 

 7-15 

 7-32 

 7-55 



•441 

 •454 

 •454 

 •447 



XXIV 



290° 



•240 



•288 

 •366 

 •473 



7-20 

 7-20 

 7-32 

 7-10 



•468 

 •458 

 •458 

 •435 



XXV 



222° 



•408 

 •508 

 •608 

 •887 



12-24 

 12-70 

 12-16 

 13-30 



•799 



•804 

 •748 

 •798 



XXVI 



218° 



•433 



•528 

 •668 

 •860 



12-99 

 13-20 

 13-36 

 12-90 



•844 

 •840 

 •836 

 •792 



XIV 



170° 

 166° 

 140° 



•98 



•84 



1-63 



29-4 



25-2 

 48-9 



1-91 

 1-61 

 318 



XV 



300° 



225° 

 149° 



•246 

 •431 



1-51 



7-38 

 12-93 

 45-30 



•479 



•840 

 2-940 



XVI 



282° 



•239 



7-17 



•466 



The constancy of the numbers in columns IV and V for any one 

 temperature serves as a test between the two formulae, and for 

 this purpose the first four lots, each of which was taken under 



