USED IN NATURAL HISTORY. 



name of the mushroom tribe of 

 fungi. 



AGA'STRICA. fr. gr. a, priv.; gaster, 

 stomach. Without a stomach. A 

 tribe of infusoria. 



A'GATE. fr. gr. agathos, good, pre- 

 cious. An aggregate of certain 

 siliceous minerals, chiefly chalce- 

 dony, variously coloured. Moss 

 agate or Mocha stone is a chalce- 

 dony containing within, moss-like 

 delineations of a yellowish-brown 

 or green colour. 



AGA'VE. fr. gr. agauos, admirable. 

 A genus of plants. 



AGGLO'MERATE. fr. lat. agglomero, I 

 wind up. To gather together. 



AGGLOMERATED. fr. lat. ad, to ; glo- 

 rnero, I heap up. Gathered into a 

 ball or heap. 



AGGLOMERA'TIOX. A mass made up 

 of parts gathered together. 



AGGLU'TINANS. Lat. Glueing. Name 

 of a gasteropod which has the fa- 

 culty of causing other species, or 

 parts of shells, to adhere to it. 



AGGLUTINATE. fr. lat. agglutinare, 

 to glue. To join parts together. 



AGGLUTINATED. fr. lat. arf, to, glu- 

 ten, glue. United together; ad- 

 hering. 



AGGREGA'TA. Lat. Aggregated. 



AG'GREGATED. Collected together ; 

 accumulated. When a fruit is 

 composed of several agglutinated 

 carpels, it is termed aggregate. 



AGGREGATION. A collection: a 

 mass composed of many. 



AGGRE'STIS. Lat. Rural, wild. 



AGILIS. Lat. Agile, supple, light. 



AGLOS'SAL. fr. gr. a, priv.; glossa, 

 tongue. Tongueless. 



AGOM'PHIA. fr.gr. a, priv.; gomphios, 

 a grinder tooth. Toothless. Ap- 

 plied to certain animalcules. % 



AG'RUMI. An Italian name for any 

 kind of lemons or oranges. 



Ai. The sloth a name derived 

 from the cry of the animal. 



AIK-CELLS. A term applied to cavi- 

 ties in the stems and leaves of 

 plants, which, being filled with 



air, enable the plants to float in 

 water; also to membranous re 

 ceptacles in birds, by means of 

 which their bodies, being per- 

 meated by the atmospheric air, 

 are adapted for flight. 



AIR-PLANTS. A name given to cer- 

 tain parasitic plants which were 

 supposed to be nourished by the 

 air alone, without contact with 

 the soil. There are some species 

 which will live many months sus- 

 pended by a string in a warm 

 apartment. 



AKE'NE. 



AKE'RA. fr. gr. a, without; keras, 

 horn hornless. Name of certain 

 rnollusks that have very short 

 tentacles, or none at all. 



AKE'RA. Plural of Akera. 



A'LA. Lat. A wing. 



AL^FO'RMIS. Lat. a/a, wing,/orma, 

 shape. Wing-shaped. 



A'LALITE. A sub-species of Augite. 



ALAR (Extent.) fr. lat. a/a, a wing. 

 Belonging or relating to the wings. 

 A term used in speaking of the 

 stretch of the expanded wings. 



ALA'TE. Winged. 



ALAUDA. Lat. A lark. 



ALAU'DIN^B. Lat. Alaudine birds, 

 or larks. 



ALBINO. Spanish, formed from the 

 Lat. albus, white. This word is 

 employed to designate those indi- 

 viduals of the human race who 

 have the skin and hair white, the 

 iris very pale and bordering on 

 red or pink; and the eyes so sen- 

 sible, that they cannot bear thy 

 light of day. Also applied to 

 animals of the lower orders that 

 are similarly characterised. 



ALBITE. fr. lat. albus, white. Soda 

 feldspar. A silicate of alumina, 

 resembling feldspar in its proper- 

 ties, with the substitution of soda 

 for potash. 



ALBITIC. Of the nature of albite. 



ALBU'MEN. fr. lat. albus, white. An 

 immediate principle of animals 



