Baermann Funnel 



A modification of the Berlese funnel (q. v.) for forcing 

 nematodes out of soil or debris. The funnel is filled with 

 warm water which forces the nematodes into a vessel below. 



Baffle-pier 



An obstruction placed in the path of water moving at a 

 high velocity, e.g., a pier on the Apron of an over-flow dam. 



Baffles 



A set of vanes, guides, or similar devices placed in a con- 

 duit to check eddy currents below them, and provide a more 

 uniform distribution of velocities. 



Bag Limit 



The maximum number of individuals of a species that a 

 hunter may take legally. 



Baguio 



A tropical cyclone or Typhoon, a term used in the 

 Philippine Islands. 



Bajada 



Outwash slopes with long straight longitudinal profiles, 

 occur in southwestern United States. 



Balance of Nature (Ecological Balance) 



The state in an Ecosystem (q. v.) when the interrelation- 

 ships of organisms to one another and to their environment 

 are harmonious or integrated to a considerable degree, e.g., 

 a climax forest. This balance may be upset in many ways 

 such as by a drastic change in environmental conditions (ero- 

 sion followed by death of many plants) or by a great increase 

 in numbers of a certain organism (grasshoppers in grass- 

 lands). See Dynamic equilibrium. 



Balanoid 



Refers to barnacles. 



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