FIXATION BY T.EGr:\ir\OT\^ IM.ANTS 



i:; 



apparent, and tlie long controversy as to the somri's of 

 nitrogen in vegetation was thus closed by a vindication of 

 both schools of opinion. 



Table V. 



• Including Calcium Nitrate, added as follows :— Pot 7, 0"2298 gram. ; Pot 23, 0-8042 gram. ; and Pot 87, 



0-66C5 gram. 

 t Including also the following amounts of Nitrate recovered :— Pot 7, nono ; Pot 23, 00-239 gram. ; and 



Pot 37, 01865 gram. t Accidentally inoculated. 



Lawes and Gilbert were perfectly correct in maintaining: 

 that the ordinary green plant has no power of fixing nitrogen, 

 but the whole class of leguminous plants form an exception 



