Fungus of Lollum. 301' 



Plate XXVI. 



Fig. 1. — A photograph of the apparatus used in the experiment 



descriljed in the paper. 

 Fig. 2. — The two pots removed from the protecting shades at end 

 of experiment. 



(A) Seedlings watered with a culture solution contain- 

 ing ammonium nitrate. 



(B) Seedlings deprived of combined nitrogen, except 

 such as is stored in the seed. The stunted growth 

 is evident, but the photograph does not shew the 

 unhealthy colour and dying back exhibited by the- 

 seedlings, and which is so characteristic of nitro 

 sren starvation. 



