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241 



The results demonstrate as follows: 



During the two days of exposure a Iranslocation of nitrogenous compounds 

 from the cotyledons to the shoots took place in the non-etherized portion. This 

 mobilization was retarded by doses of ether of O.S and 5 c. c. per liter, most by 

 the latter; on the contrary the deviation from the result in 2 produced by the 

 smallest of the doses is so slight that il may be entirely ascribed to the variation 

 of the material. Etherization (with doses of 05 and 3 c. c.) has retarded the 

 katabolism of the proteids in the cotyledons in proportion to the strength of the 

 dosis, as seen by the table by the numbers of g. The numbers of i demonstrate 

 that the percentages of N of proteids of the total amount of N are in all the por- 

 tions nearly the same, which fact demonstrates that the formation of amides and 

 the translocation of nitrogenous compounds from the cotyledons to the shoots are 

 greatly dependent on each other, a fact which gainsays the results of Zaleski 

 already quoted. 



In the shoots both the amounts of amides and of proteids are increased 

 during the exposure. With regard to the two groups of substances mentioned, the 

 increase is retarded by the two largest doses of ether. A calculation of the amount 

 of nitrogen of the proteids stated in per cent of the total amount of nitrogen of 

 the separate portions shows the numbers of i. These numbers, which show only 

 a slight variation demonstrate that the rapidity of the synthesis of proteids in the 

 shoots are closely allied to the amount of the amides conveyed to the shoots. 



Thus this experiment conlirmed the results obtained in the experiments on 

 the lupines, but it did not demonstrate the result conjectured of an increase of 

 the translocation of materials caused by small doses of ether. 



To investigate whether an acceleration of the translocation is possible I have 

 performed several other experiments in the same manner as A: (B.C. D.E.): 



B. Seedlings 4 days old were used for the experiment. 



Weight of the samples before the exposure: 



1. 2. 3. 4. 



24-33 gr. 24-02 gr. 2459 gr. 23-80 gr. 



Each sample contained 54 seedlings. Temp. 14 — 18°. 



Shoots. 



