Tari.k IV.— Summary of the Results of Exf'eriments made at 

 rotuamsted to determine whether plants assimilate 

 Free Nitrogen. 



Nitroireu. — Giaui. 



Ill Seed 



and 

 Manure 

 if any. 



lu 



Plants, 



Pot, and 



Soil. 



Gain or 

 Loss. 



WITH NO COJIBINED NITROGEN SUPPLIED BEYOND THAT 

 IN THE SEED SOWN. 



Gramineae 



Leguminosas 



Other Plants . 



1857- 



1858 



1858J 



1857 



1858 



- o oooS 

 + 0-0016 

 + 0-0026 



+ 0-0003 

 + 0-0001 



- 0-0007 



-0-000 1 

 -0-000; 



+ 0-0007 

 -0-0021 



-0-0018 



0-90 

 1-29 

 1-46 



1-04 

 1-02 

 0-89 



I -00 

 0-98 



0-99 



I -01 



089 



0-91 



with combined nitrogen SUPPLIED. 



Leguminosse -[ 



Other Plants . 



1857- 



1858 



1858J 



i858{ 



18:8 



iS;8 



Wheat 

 Wheat 

 Barley , 

 Barley . 



Wheat , 

 P)arley 

 Oats . 



Wheat 

 Barley 

 Oats . 



Peas . 

 Clover 



Beans 

 Buckwheat 



+ 0-0054 



+ 0-0002 

 + 0-0002 

 + 0-0069 



-0-00I2 

 -0-0032 

 -0-0096 



+ 0-0006 

 -0-0015 

 - 0-0062 



-o-ooi6 

 -0-0047 



-0-0056 

 -o-ooi6 



I-I6 



I -or 



I -01 

 1-25 



o-qS 

 o-i,4 

 o-u^ 



1-02 



0-94 

 0-76 



0-93 

 0-93 



0-92 

 0-95 



