Infiltrometor 



A mechanism for measuring Infiltration into the soil in 

 which water is applied by sprinkling or flooding. 



Inflorescence 



The flower-cluster in plants, including the flowers, bracts, 

 and stems. 



Influent 



(1) An organism which has important interactions (Reac- 

 tions, Coactions) within a community, but is not a dominant. 

 (2) The flow of water from a channel into subterranean 

 storage, cf. Effluent. 



Infrcmeuston 



Animals which are supported by the lower surface of the 

 film of water on lakes and ponds, e.g., mosquito larvae, cf. 

 Neuston, Supraneuston. 



Infusoria 



Used formerly in the sense of all microscopic organisms 

 occurring in infusions of organic matter; now used chiefly 

 for ciliated Protozoans (Ciliophora). 



Ingestive Behaviour 



The actions of an organism when eating or drinking. 



Inheritance 



See Heredity. 



Inheritance of Acquired Characters 



The outmoded theory of evolution tfyat modifications 

 produced during the lifetime of an individual, because of 

 use or disuse, new needs, or because of the direct action of 

 the environment are inherited by the offspring and are 

 cumulative with time. 



Initial Cause of Succession 



The process or agent which produces denuded or partly 



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