ANA 



A N I 



Parkinson. The genus comprises several 

 species. It belongs to the class Cirrho- 

 poda. The anatifse are often found ad- 

 hering to rocks, pieces of wood, the 

 bottoms of ships, &c. 



ANA'TIFER. (from anas, a duck, Siudfero, 

 to bear, Lat.) A name given to the bar- 

 nacle, or pentelasmis. The same as Ana- 

 tifa. 



ANCI'LLA. ) An oblong subcylindrical 



ANCILLA'RIA. $ univale, with a short spire, 

 not channelled : the aperture effused, and 

 its base slightly notched. Parkinson. 

 The eburna glabrata, or ivory shell, be- 

 longs to the genus Ancilla. 



ANDALU'SITE. A massive mineral of a red 

 or grey colour ; it occurs also crystallised. 

 Lustre shining, glistening, and vitreous. 

 Fracture uneven ; is easily broken. 

 Feebly translucent. Specific gravity 3-160. 

 Constituent parts, alumina 52, silica 32, 

 potash 8, oxide of iron 2. It was first 

 found in Spain ; it occurs in gneiss in 

 England, Ireland, and Scotland. 



ANDRE'OLITE. Thus named from its hav- 

 ing been first found at Andreasberg, in 

 the Hartz ; called also Harmotome, and, 

 sometimes, from the form of its crystals, 

 cross-stone. Its crystals are two four- 

 sided flattened prisms, terminated by 

 four-sided pyramids, intersecting each 

 other at right angles ; the plane of inter- 

 section passing longitudinally through 

 the prisms. Texture foliated. Colour 

 milk-white. Constituent parts, silica 44, 

 alumina 20, barytes 20, water 16. It 

 effervesces with borax and microcosmic 

 salt, and is reduced to a greenish opaque 

 mass. With soda it melts into a frothy 

 white enamel. When its powder is 

 thrown on a hot coal, it emits a greenish 

 yellow light. Thomson. 



ANDRO'GYNAL. J (from avtjp, and -yvvn, 



ANDRO'GYNOUS. $ Gr.) Having two sexes ; 

 being both male and female ; hermaphro- 

 ditical. Plants bearing male and female 

 flowers on the same root are thus called. 



ANEMO'METER. (from dvsfiog and psTpov, 

 Gr. ane'mometre, Fr. anemometro, It.) 

 An instrument for measuring the strength 

 or velocity of the wind. 



ANGIOSPE'RMIA. (from ayyttor, a recepta- 

 cle, and airkpfia, seed, Gr.) In the arti- 

 ficial system of Linnaeus, an order of 

 plants of the class Didynamia. It con- 

 sists of plants having numerous seeds con- 

 tained in a seed vessel. The class Didy- 

 namia is divided into two orders, Gym- 

 nospermia and Angiospermia. In the 

 first order, or those having naked seeds, 

 the plants are mostly wholesome and aro- 

 matic. In the second, where the seeds 

 are enclosed in a seed-vessel, we find the 

 Digitalis, and other poisonous plants. 



ANGIOSPE'RMOUS. (angiosperme, Fr.) Be- 



longing to the order Angiospermia ; hav- 

 ing the seeds enclosed in a seed-vessel. 



ANGIO'STOMA. } A family of univalve shells, 



ANGYO'STOMA. \ in the order of Siphono- 

 branchiata. It includes many genera, 

 as the Conus, Cyprsea, Terebellum, &c. 



A'NGLE. (angulus, Lat. angle, Fr. angolo, 

 It.) The point at which two lines meet. 



ANGUI'LLIFORM. (from anguilla, an eel, 

 and forma, Lat.) A term given to fishes 

 having the form of an eel. 



A'NGULAR. Having angles or corners. 



ANGULA'RITY. The quality of being an- 

 gular. 



A'NGULARLY. With angles or corners ; 

 in the direction of the angles. 



A'NGULARNESS. The quality of being an- 

 gular. 



A'NGULATED. Formed with angles or cor- 

 ners. 



ANGULI'TES. A species of fossil nautilus. 



ANGULO'SITY. Angulated ; cornered form. 



A'NGULOUS. Angular ; hooked. 



ANGU'STATE. (angustatus, Lat.) Begin- 

 ning with a narrow base, which base then 

 dilates and thickens. 



ANHY'DRITE. Anhydrous gypsum. A 

 variety of sulphate of lime, called anhy- 

 drous gypsum, or anhydrite, in conse- 

 quence of its being quite free from water. 

 It is harder than selenite, and sometimes 

 contains chloride of sodium, when it is 

 called muriacite. Its colours are white, 

 blue, red, and grey. It occurs both mas- 

 sive and crystallised. Lustre alternates 

 from splendent to glistening-, and is pearly. 

 Fracture splintery and conchoidal. Spe- 

 cific gravity 2-850. There are six va- 

 rieties of this mineral. 



ANHY'DROUS. (from , priv. and vSwp, 

 water.) Without water in its compo- 

 sition. 



ANIMA'LCULAR. Belonging to animalculee, 

 or animalcules. 



ANIMA'LCULE. (animalculum, Lat. ani- 

 malcule, Fr. animaletto, It.) An exceed- 

 ingly small animal, scarcely discoverable 

 by unaided vision, but which, by the help 

 of the microscope, is found both in solids 

 and fluids. 



A'NKERITE. Paratomous limestone, a spe- 

 cies of limestone thus named after Prof. 

 Anker. It is found in the mines of 

 Styria. 



A'NIMAL KINGDOM. The animal kingdom 

 comprehends beings the most diversified 

 as to form, structure, and the media in 

 which they live ; for in it are found some 

 organised to fly through the air, others to 

 creep on the earth or burrow under its 

 surface, and others to descend into, and 

 inhabit the depths of the sea. Natural- 

 ists, taking the structure of animals for 

 their basis, have arranged the whole ani- 

 mal kingdom under four great divisions, 



