1033 



TEIUS. 



TEMIA. 



1031 



which they lay themselves up for the winter. When, in their flight 

 to avoid pursuit, they come upon a lake, pond, or river, they plunge 

 in, according to D'Azara, to escape from the danger which menaces 

 them, and do not leave the water till all fear of danger is past. These 

 Lizards, observe Messrs. Dume'ril and Bibrou, have not, indeed, 

 webbed feet; but their long and slightly compressed tail becomes, 

 without doubt, under such circumstances, a sort of oar, of which they 

 well avail themselves. D'Azara states that they feed on fruits and 

 insects, and that they also eat serpents, toads, young chicks, and 

 eggs. He also relates that they are fond of houey ; and that in order 

 to procure it without fear of the bees, they come forward at intervals, 

 and, as they run away each time, give the hive a blow with their tail, 

 till by repeated attacks they weary out the industrious insects, and 

 drive them from their home. 



Variegated Lizard (Trial Trgniiin 



Head of Vari. gal:d Lizard. 



TEIUS. [TEID.K] 



TELEOSA'URUS. [CnoconiLiDJ;.] 



TELESCO'PIUM. [E.NTOMOSTOMATA.] 



TELLI'NA. [CONCHACEA.] 



TELLl'NID^E. [CONCHACEA.] 



TELLUR-BISMUTH. [TELLURIUM.] 



TELLU'RIUM, a Metal which was discovered in 1782byMuller 

 of Reichenstrin, but its properties were more minutely examined 

 by Klaproth sixteen years afterwards, and he gave it the name it 

 now bears. 



Native Tellurium is found crystallised and massive. Primary form 

 a rhomboid, occurring in minute 6-tided prisms, the terminal edges 

 of which are usually replaced. Cleavage parallel to the faces of the 

 priam. Fracture indistinct Hardness : scratches sulphate of lime, 

 and is scratched by the carbonate. Easily frangible. Colour tin- 

 white or ateel-gray. Lustre metallic. Specific gravity 5'7 to 6'1 15. 

 Before the blow-pipe it is very fusible, and burns with a greenish 

 flame, and is volatilised in a white vapour. It is soluble in hydro- 

 chloric acid. 



A massive variety is granular. Colour splendent, tin-white. Lustre 

 metallic. Opaque. Specific gravity 6'1 15. It occurs in Transylvania, 

 and, according to Klaproth's analysis, gives 



Tellurium 92'55 



Iron 7-20 



Gold 0-25 



100 



Graphic Tellurium Auro-Aryentiferout Tellurium occurs crystal 

 lined. Primary form a right rhombic prism ; occurs iu attached flat- 

 tened crystals, which are generally minute. Fracture uneven. 

 Hardness : scratches talc, and is scratched by calcareous spar. It ia 

 brittle. Colour steel-gray. Lustre metallic. Opaque. Specific gravity 

 5723. Before the blow-pipe it readily fuses into a globule, and is 

 reduced to a metallic button of a bright yellow-colour. Soluble in 

 nitric oid, except a yellow metallic residue. It is found accom- 

 panying gold in narrow veins traversing porphyry at OBenbanya, and 



also at Nagyag, in Transylvania. It consists of tellurium, gold, silver, 

 and lead. 



Berzelius found also a little sulphur, arsenic, antimony, iron, and 

 copper. 



Yellow Tellurium, occurs in imbedded crystalline laraiuic. Primary 

 orm a right rhombic prism. Traces of cleavage. Fracture uneven. 

 Hardness : scratches gypsum, and is scratched by calcareous spar, 

 [{ather brittle. Colour silvery-white, inclining to brass-yellow. Lustre 

 metallic. Opaque. Specific gravity 10'678. By the blow-pipe it 

 melts into a metallic globule. It ia partly soluble in nitric acid. It is 

 found at Nagyag in Transylvania, and in the Altai Mountains in 

 Siberia. According to Klaproth, it contains tellurium, gold, lead, 

 silver, and sulphur. 



Mack Tellurium occurs crystallised, and in imbedded foliated 

 masses. Primary form a square prism. Cleavage parallel to the 

 terminal plane, in thin flexible lamina). Fracture indistinct. Hard- 

 ness : scratches talc, and is scratched by gypsum. Colour dark lead- 

 gray. Lustre metallic. Opaque. Specific gravity 7'085. Before the 

 blow-pipe is fusible on charcoal, and covers it with oxide of lead ; 

 reducible into a gray metallic globule, which eventually leaves a 

 button of gold. It is found at Nagyag and Oflenbiuiya in Transyl- 

 vania, and contains, according to Klaproth tellurium, lead, gold, 

 silver, copper, and sulphur. 



llinmuthic Tellurium Tellur- Bismuth ; Tellurct of Bismuth occurs 

 crystallised in small 6-sided prisms. Cleavage parallel to the base of 

 the prism. Fracture indistinct. Hardness : scratches calcareous spar, 

 and is scratched by fluor-spar. Colour steel-gray or zinc-white. Lustro 

 metallic. Specific gravity 7'82. It is fusible by the blow-pipe, and 

 disengages the odour of selenium. Acted on by nitric acid, and the 

 solution is precipitated by water. It is found in Norway, and 

 contains 



Tellurium ..... 



Bismuth 



Sulphur and traces of Selenium 



TELOPHO'NUS (Swainson), a genus of Birds, 

 character of the bill is seen in the accompanying figure. 



34-G 



60-0 



4-8 



-99-4 



The 



Bill of Tclcphonus leucoffrainmicttr. 



TE'MIA (Le Vaillaut), a genus of Perching Birds, which, Cuvier 

 observes, M. Vieillot has changed into Crypsirin<i t and Dr. Horsfield 

 into Phnnolrix, whilst M. Temminck arranges them under O'laucopis. 



Bill of Crypiirina. (Swainson.) 



Mr. Swainson thus characterises Crypsirina : Bill shorter thau the 

 head, much compressed ; the culmen considerably arched, and curved 

 from the base. Nostrils small, basal, concealed by incumbent feathers, 

 which are either soft or setaceous. Wings short, much rounded ; the 

 primaries hardly longer than the secondaries. Tail feathers broad 

 and obtuse. Feet moderate, arboreal. The middle toe and claw 



threuotrit Tcmia. (Horsflcld.) 



