GLOSSARY. 



the earth in which there is no decli- 

 nation of the magnetic needle from 

 the meridian. 



Agra'rian (Lat. ager, a field). Rela- 

 ting to lands. 



Agriculture (Lat. ager, a field ; colo. 

 I cultivate). The science of culti- 

 vating the ground. 



Aiguille (Fr. a needle). In physical 

 geography, applied to the sharp 

 needle-like points of lofty moun- 

 tains. 



Air-bladder. A bladder containing 

 air ; generally applied to a bag in 

 the interior of fishes, capable of 

 being filled with air a rudimen- 

 tary lung. 



Air-cell. A cell or cavity containing 

 air. 



Air-pump. An instrument for with- 

 drawing air from a vessel. 



Air-sac. A receptacle for holding air. 



Ak'era (Gr. a, a, not ; itepas, Tceras, 

 a horn). A family of mollusca 

 without horns or feelers. 



Ala (Lat.) A wing, or a projection 

 like a wing. 



Alar (Lat. ala, a wing). Belonging 

 to a wing. 



Alate (Lat. ala, a wing). Having 

 wings. 



Albi'no (Lat. albus, white). A person 

 or animal in whom the natural co- 

 louring matter of the skin, hair, 

 and eyes, is absent. 



Albugin'ea (Lat. albugo, a white spot 

 in the eye). The white appearance 

 in front of the eye, formed by the 

 expanded tendons of the muscles 

 which move the organ. 



Albugin'eous (Lat. albugo, a white 

 spot in the eye). Belonging to or 

 resembling the white of the eye. 



Albu'men (Lat. albus,^ white). A sub- 

 stance found in animals and vege- 

 tables, of which the white of egg is 

 an example. 



Albuminip'arous (Lat. albumen, the 

 white of egg ; pario, I produce). 

 Producing or secreting albumen. 



Albu'minoid (Albumen ; Gr. elSos, 

 eidos, form). Resembling albumen. 



Albu'minous (Lat. albumen, the white 

 of egg). Belonging to or containing 

 albumen. 



Albur'num (Lat. albus, white). The 

 softer wood or sap-wood, between 

 the bark and the heart-wood. 



ATchemist (Arabic, al, the ; Jcimia, 

 secret ; or Gr. x e<a i chen, I pour). A 

 person who practises alchemy. 



Al'chemy (Arab, al, the ; Jcimia, se- 

 cret ; or Gr. x W c ^ f " I pour). 

 The pretended science of changing 

 other metals into gold, &c. 



Al'cohol (Arab, al, the ; Jcohol). A 

 fluid body produced by distillation 

 from fermented spirits, in which it 

 has been formed from sugar. 



Alcoholism (Alcohol). A diseased 

 state, arising from the excessive 

 use of alcoholic liquors. 



Alcohom / eter (Alcohol; Gr. pcrpov, 

 metron, a measure). An instru- 

 ment for determining the strength 

 of spirits by indicating the per- 

 centage of pure alcohol. 



Alem'bic (Arab, al, the ; ambiJc, a 

 chemical vessel). A vessel used ia 

 distillation. 



Algae ( Lat. afya, sea- weed). An order 

 of cryptogamous plants, including 

 sea- weeds. 



Al'gebra (Arab, al, the ; gabar or 

 chabar, to reduce parts to a whole). 

 A method of computation in which 

 signs (usually the letters of the al- 

 phabet) represent quantities. 



Algebraical (Algebra). Pertaining 

 to or performed by means of Algebra. 



Al'gia (Gr. dtyos, algos, pain). Used 

 as the ending of a word, denotes pain 

 in the part spoken of. 



Al'gide (Lat. al'geo, I am cold). Ac- 

 companied by great coldness ; ap- 

 plied to diseases, such as fevers and 

 cholera. 



Aliena'tion (Lat. alienus, belonging 

 to another ; foreign). A transfer- 

 ring to another ; in medicine, in- 

 sanity. 



A'lienist (Fr.alie'ne", insane). Relating 

 to insanity : applied to physicians 

 who specially study insanity. 



Aliform (Lat. ala, a wing ; forma, 

 shape). Shaped like a wing. 



Al'iment (Lat. alo, I nourish). Food 

 or nourishment. 



Alimentary (Lat. alo t I nourish). 

 Belonging to food. 



