﻿262 



50 



(E — A) -^ (G -^ D) == (6-60 4 1-83) -^ (I-O68 ^ 2-27 ± Vi-Té^ + l-TSS^) 

 ^ (6-60 + 1-83I -^ {-^ 1-20 -j- 2-46). 



As more than one tuber had been used for each double-poi'tion in all these 

 experiments, the considerable variability characteristic of the material used might 

 possibly be ascribed to the circumstance that 1 had not seen to that the corre- 

 sponding halves of each tuber weighed exactly the same. In order to investigate 

 this question and to supply the above mentioned experiments, some more experi- 

 mental series were carried out; viz. H, I and K besides the very small series L. 



Series H. (March 1908). 

 All the samples were crushed directly after being split. The calculation ol 

 the deviations was performed as in Series B. Temp. 10— 11°. 



/a. 



/a 



1 1. . 



(a 

 lb. 



fa 



lb 



/a 



»b. 



lb. 



fa 



Weight 



X of 

 amides 



Double 



deviations 



from the 



means 



I r,.: 



1') f a . 

 »b. 



5-98 



V 3-(;7 



\ 1-68 



] 2-52 



\ l-()!l 

 \ 1-20 



<T = + 4-248 "/n. 



fa 

 Ib. 



Weight 



of 

 potatoes 



>b 



Ib. 



fa 

 lb. 



lb 



1.5 [^ 

 lb 



grs. 



66-75 

 64-36 



44-27 

 45-43 



51-28 

 50-71 



57-96 

 56-40 



40-36 

 40-60 



37-57 

 37-63 



42-84 

 43-48 



.57-12 

 58-15 



Double 

 N of deviations 

 amides from the 

 means 



mgrs. 

 16-30 

 17-20 



15-12 

 14-50 



13-80 

 14-20 



16-60 

 15-90 



15-05 

 14-35 



17-00 

 17-80 



17-26 

 16-05 



19-85 

 18-65 



5-37 

 4-19 

 2-86 

 4-31 

 4-76 

 4-60 

 7-20 



(;-2:î 



Series I. (March 1908). 

 The samples marked a were crushed directly after being split, the parallel- 

 portions marked h were put aside with Ofic. c. ether per liter for 3 days. Absolute 



