472 



ISHIZUKA 



Objects. 



Date of analysis. 



Nitric anhydride in 

 100 parts of dry 

 matter. 



Fruits. 



f 



Solatium Mtlongena 



Sept. 21. 



Spnfr in 



0.13 





Oct. 24. 

 ?sov 28 



0.78 

 0.52 



Isolated roots. 





Oct. 19. 

 Oct 



0.1 1 



0 06 



Allium fist ulo sum 



Oct. 3. 

 Nov. 9. 



••35 

 0.17 





Nov. 22. 

 Febr. 24. 

 Anr 7 



325 

 ' 2.85 



2 CO 



\ 



Nov. 22. 

 Febr. 29. 



1. 16 



0.90 



j Leaves and stems. 



/ 



Brassica oleracea (sprouts) , 



Nov. 9. 



I. OO 



Raphanus sativus 



Sept. 24. 

 Oct. 21. 



4.14 

 2.44 



Brassica campestris 



V 



Sept. 24. 

 Oct. 21. 



2.8l 

 2.12 



From tJiis table it becomes quite cvidoit that the amount of 

 nitrates in the different cases decreases more or less on keeping 

 the objects. 



I directed my attention further to the amount of nitrates 

 found in the same plants at different seasons, especially in such 

 plants, as serve generally as food, viz., the root of Raphanus 

 sativus and Brassica campestris , commencing the determination 



