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The results ol" series A sliow thai Ihe sum ol" the processes of liie nitrogenous 

 compounds, which take place in the tuhers which have been exposed lo injury, is 

 characterized by a condensation as the average value of the results indicating the 

 degree of the condensation is found to be larger than the m multiplied with 3 

 (825 >3- 116)'. The mean error of the difference between the standard deviations 



<T, and a., found in A and R is 



\\/2n,J \V2nJ ~^ 1,1/2-48/ VK2 ■ 25/ 



= 1-337, the mean error of the standard deviation being , ,^ . This value is 

 ' ^2;) 



however larger than the difference between the standard deviations of A and B: 

 ,Sfl3(5 -^ 741 = 062(i, which circumstance states that the variability of the results 

 found in A must be ascribed to the variability of the material. The same may be 

 said with regard to the results of the other series though the differences found 

 seem considerable. The most extreme values of the standard deviations are found 

 in E and C, but even with regard to these results no difference can be demon- 

 strated as -f 3 1 ( -^^^X-À-f ~*^X= 4- 3 •212 is considerably larger than the 

 — ' \V2- 10/ \K2- 10/ 



difference found: 836 -^ 449 = 387. 



The results of series E of which the tubers were exposed to injury for 5 days 

 indicate a condensation still greater than shown in A the difference of the results 

 being M, —M.,±Vm,-'-\-m^-' = 1485 -^ 8-25 ± 1/1-422 ^ j.^g^ = 6-60^ 1-83. Neither 

 with regard to C nor to F and G were any changes of the nitrogenous compounds 

 observed during the 3 days of exposure, although the results of F and D might 

 indicate a slight condensation. 



A — C = 8-25^2-OOd- Vi 16" -L2-64- = 625^2-88 shows that the condensa- 

 tion produced by injury is in all probability retarded by the effect of ether as 6-25 

 is more than twice as large as 288 (625:2-88 = 217). Also the dose used in D 

 must be considered as having produced the same effect, which may be seen by the 

 following calculation : A ^ D = 825 ~ 227 ± K116^+ 1-73' = 5-98 ± 208; 598 : 208 

 = 2-88. 



(Ê^A) ^ (F-^C) = (14-85 -=-8-25±l/l-42='+ 1-16^) -^ (3-74 -4- 2-00 ±V2-37'' + 2-642) 

 = (6-60 + 1-83) -^ (1-74 + 354) shows that the condensation normally produced by 

 the injury on the 4th and 5th days is retarded by the after-effect of the etheriza- 

 tion E — A demonstrating the metabolic processes on the 4th and 5th days after 

 the injury and F — C demonstrating the metabolisms of the same 2 days if the 

 plants were injured as well as etherized. 



A dose of 0-6c.c. ether has retarded the condensation on the 4th and 5th days, 

 which may he proved by the same method of calculation: 



■ With a probability of 4987 of MOO tlie mean M lies between the limits -J- :h . m and H- 3 m. 

 I.Iohannsen 1909, p. 65]. With the same probability a lies between the limits -f- 3 . m„ and -î- 3 . m„, m„ 

 indicating the mean error of the standard deviation. 



1). K. I) Vidensk. Selsk. .Skr.. ". Række, nalurvidensk. og ni.Tthem. Afd. VI. 



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