G68 The Sources of the Nitrogen of our Leyimmous Crops. 
Table II. — Summary of the Results of Experiments made at Botlut/nsted, in 
1857 and 1858, to determine ivhether Plants assimilate free INitrogen. 
Nitrogen, grata. 
In Seed, and 
Manure, if 
any. 
In Plants, 
rot, and 
Soil. 
Gain or Loss. 
With no combined Nitrogen supplied leyond that in the Seed sorcn. 
(Wheat . . 
/ 1837 \ Barley . . 
(.Barley . . 
gram. 
0-0080 
00056 
0 0056 
gram. 
00072 
0-0072 
0-0082 
gram. 
-00008 
+ 0-0016 
+ 0-0026 
Graminete . - 
(Wheat . . 
1858 ] Barley . . 
(Oats . . . 
0-0078 
00057 
00063 
0-0081 
0-0058 
00056 
+ 00003 
+ 00001 
-00007 
1858 A' -'jy^f^*^ • • 
t Oats . . . 
0-0078 
0-0064 
0-0078 
0 0063 
0 0000 
-0-0001 
f 1857 Beans . . 
L:'guminos(C . J 
^1858 : : 
0-0796 
0-0750 
0-0188 
0-0791 
0-0757 
0-0167 
-0 0005 
+ 0 0007 
-00021 
other plants . 
1858 Buckwheat 
0-0200 
00182 
-00018 
With combined Nitrogen supplied beyond that in the Seed sown. 
(Wheat . . 
, 1 Wheat . . 
1^^"^ 1 Barley . . 
I Barley . . 
00329 
0-0329 
0-0326 
0-0268 
0-0383 
0-0331 
0-0328 
0-0337 
+ 0 0054 
+ 00002 
+ 0-0002 
+ 00069 
(Iraminccc . ■• 
(Wheat . . 
1858 . Barley . . 
(Oats . . . 
00518 
0-049G 
00312 
00536 
0-04G4 
0-0216 
-0-0012 
-0 0032 
-0-0096 
1 (Wheat . . 
1858 A ' -j Barley . . 
( Oats . . . 
0-0268 
00257 
00260 
00274 
00242 
0-0198 
+ 0 0006 
-0-0015 
-0 0062 
Leguminosre | 
1858 l^^f*® ■ • • 
t Clover . • 
1858A> Beans . . 
0-0227 
0-0712 
0-0711 
0 0211 
0-0665 
00655 
-j'oooie 
-00047 
-0-0056 
Other plants . 
1858 Buckwheat 
00308 
0-0292 
-0-0016 
' These experiments were conducted iu the apparatus of M. G. Ville. 
as those with the Graminece. Nevertheless, we concluded, and 
still conclude, from the results of our own experiments, -as 
Boussingault did from his, that neither the Gramineca nor the 
Lerjuminosce assimilate the free nitrogen of the air. 
