104 J. H. Gilbert— Poi. 



i with Vegetal 



On this point, of whether or not plants ass 

 nitrogen of the atmosphere, leaving out of v: 

 time and space, the experiments and conclus 

 others who have worked on the subject on a less comprehen- 

 sive scale, I will first briefly direct attention to the most com- 

 prehensive series of experiments, the results of which led the 

 author to conclude that the free nitrogen of the atmosphere is 

 the leaves of plants. 



During the years 1849, 1850, 1851, 1852, 1854, 1855, and 

 1856, M. G. Ville, of Paris, made numerous experiments 

 this subject His plants were g 

 case, and his soils consisted of \ 

 and brick, or sand and charcoal, 

 plied with a current of unwashed 

 of washed air, and they were somel 

 a known quantity of ammonia wa 

 apparatus, and sometimes known 

 supplied to the soil. Lastly, a g 

 experimented upon. M. G. Ville's 

 Table V, below. 



3nerally enclosed i 

 ashed and ignited s 

 They were somet 

 lir, sometimes with 





r of the 



triety of plants 



r of M. G. ' 







1849: Owren 



t, fn.ro 



ashed air supplying 0-001 gra 



ms Nitrogen <u 



Amn 



wnia.* 



Cress 



0-1550 



1 



iE 



1 



S3 Lupins: 









Colza (plants) 



H 



II 



II 



" 



Kye— 





in i 





a Vegetation, par M. ( 



