GLOSSARY 



TERMS DEFINED AS USED IN THIS TEXT 



absolute humidity. Weight of water vapor, grains per cu. ft. 

 acclimatize, a-cll'ma-tlz. Adaption of plants and animals to a climate, 

 acetone, ac/ e-ton. An inflammable liquid which readily dissolves 



acetylene. 



acetylene, a-c,eV y-len. An illuminating gas; a hydrocarbon, 

 aeration, a" er-a' sh6n. To supply or charge with air. 

 aerobic, a" er-o' blc. Applied to organisms which live in free oxygen, 

 aeroplane, a' er-o-plan. A heavier-than-air flying machine, 

 anaerobic, an-a" er-o' bic. Said of organisms which thrive without free 



oxygen. 



anthracite, an' thra-slt. Coal containing but little volatile matter, 

 antiseptic, an" tl-sep' tic. That which prevents the growth of organisms, 

 antitoxine, an" ti-tSx' m. A substance which neutralizes toxines. 

 Appalachian, 3,p"a-lach' i-an. Mountain range in eastern United States 

 apparatus, &p"a-ra' ttis. Appliances and materials used in performing 



experiments. 



aqua ammonia, a' kwa a-mo' ni-a. Ammonia dissolved in water, 

 aqueduct, ak' wl-dukt. A conduit for conveying water. 

 Archimedes, ar" ki-me' dez. Greek mathematician, 287-212 B.C. 

 artesian, ar-te' zhan. Deep well, usually flowing. First found in 



Artois, France. 



artificial, ar" ti-flsh' al. Produced by art, not by nature, 

 assimilate, a-slm'i-lat. To transform food into protoplasm, 

 atmosphere, at' mos-fer. All the gases surrounding the solid earth, 

 attenuate, at-tn' yu-at. To weaken, especially in virulence, 

 automatic, a" t5-mat' ic. Self -moving, self -regulating, 

 automobile, a to-mo' bll. Self-propelling vehicle, 

 axle, aks' 1. A support upon which a wheel turns, 

 bacillus, ba-c,fl' us (pi. bacilli). A rod-shaped bacterium, 

 baguios, ba'-gi-6s (sing, baguio). Philippine hurricanes, 

 barograph, bar o-graf. Instrument which writes continuous record of 



atmospheric pressure, 

 barometer, ba-rom' e-ter. An instrument for measuring the atmospheric 



pressure. 



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