GLOSSARY. 



Alimenta'tion (Lat. alo, I nourish). 

 The act of receiving or imparting 

 food. 



Aliquot (Lat. aliquot, some certain). 

 A part which, multiplied by any 

 entire number, exactly makes up a 

 given whole. 



Alisphe'noid (Lat. ala, a wing ; 

 sphenoid). A term applied to the 

 part of the skull in fishes which 

 corresponds to the alae or wings of 

 the sphenoid bone. 



Alkales'cent (A Ikali). Having a ten- 

 dency to be or to become alkaline. 



Al'kali (Arab.). A substance hav- 

 ing the property of changing vege- 

 table blues to red, and turmeric 

 and rhubarb to brown, and of 

 neutralising acids. 



Alkalig'enous (Alkali; Gr. -yej/i/aw, 

 gennao, I produce). Producing al- 

 kali. 



Alkalim/eter (Alkali; Gr. perpov, 

 metron, a measure). A graduated 

 measure used by chemists in pro- 

 cesses for ascertaining the amount 

 of alkali in any substance. 



Alkalim'etry (Alkali; Gr. pfTpov. 

 metron, a measure). The process 

 by which the quantity of alkali in 

 any substance is measured. 



Alkaline (Alkali). Having the pro- 

 perties of or containing an alkali. 



Alkalinity (Alkali). The condition 

 produced by an alkali. 



Al'kaloid (Alkali; Gr. si'Sos, eidos, 

 form). An organic body consisting 

 of carbon, hydrogen, nitrogen, and 

 oxygen, having the general pro- 

 perties of an alkali. 



Allan' toid (Allantois). A term ap- 

 plied to the vertebrate animals 

 of which the foetus is provided with 

 an allantois ; including mammals, 

 birds, and reptiles. 



Allan' tois (Gr. oAAos, alias, a sausage; 

 et'Sos, eidos, form). One of the 

 membranes which invest the foetus. 



Allia'ceous (Lat. allium, garlic). Be- 

 longing to or resembling garlic. 



Alliga'tion (Lat. ad, to; ligo, I bind). 

 A tying together ; a rule in arith- 

 metic for finding the average price 

 of a compound of different sub- 

 stances. 



Allophyrian (Gr. a\\os, olios, ano- 

 ther ; <pv\ri, phule, a tribe). A 

 term applied to the races supposed 

 to have inhabited Europe before 

 the passage into it of the Asian 

 nations. 



Allotrop'ic (Gr. d\\os, allos, another ; 

 rpeirw, trepo, I turn). Having the 

 property of existing in two or more 

 forms with different physical pro- 

 perties, the composition remaining 

 the same. 



Alloy (Lat. ad, to ; ligo, I bind). A 

 compound of two or more metals. 



Allu'vial (Lat. allu'vies, a muddy 

 stream). Produced by deposit of 

 mud, &c., washed down by water. 



Allu'vium (Lat. ad, to ; lavo, I wash). 

 The soil or land formed of matter 

 washed together by the ordinary 

 operations of water. 



Alope'cia (Gr. a\uv^, alopex, a 

 fox). Loss of hair : foxes have 

 been said to be subject to it. 



Alt-az'imuth. A term applied to an 

 astronomical instrument for ob- 

 serving both the altitude and 

 azimuth. 



Alterative (Lat. alter, another). A 

 medicine which gradually produces 

 a change in the constitution. 



Altern'ate (Lat. alternus, belonging 

 to one another). Being by turns ; 

 in botany, applied to branches and 

 leaves which rise on opposite sides 

 alternately; in geometry, to the 

 internal angles made by a straight 

 line cutting two parallel lines, and 

 lying on opposite sides of the cut- 

 ting line. 



Alternate generation. A form of 

 reproduction in which the young do 

 not resemble the parent but the 

 grand-parent. 



Altitude (Lat. altus, high). Height; 

 in astronomy, applied to the real 

 or apparent height of a heavenly 

 body from the horizon ; in geo- 

 metry, the distance of the vertex 

 or summit from the base. 



A'lula (Lat. ala, a wing). A little 

 wing. 



Aluminif'erous (Lat. alumen, alum; 

 fero, I bear). Producing alum. 



Alve'olar (Lat. alveolus, a socket). 



