LAM 



[ 139 ] 



LAP 



or layers placed one over the other ; 

 foliated. 



LAME'LLI BRANCHIA'TA. In De Blain- 

 ville's conchological arrangement, the 

 third order of Acephalophora, containing 

 ten families of bivalves. 



LAMELLICO'RNES. In Cuvier's arrange- 

 ment, the sixth family of pentamerous 

 coleoptera ; they have foliated horns, 

 from which circumstance they obtain their 

 name. 



LAMELLI'FEROUS. (from lamella, a small 

 plate, and/ero, to bear, Lat.) Having a 

 structure composed of thin layers ; having 

 a foliated structure. 



LAMELLIRO'STRES. In Cuvier's arrange- 

 ment, the fourth family of the order of 

 Palmipedes. The lamellirostres have a 

 thick bill, the edges of which are furnished 

 with laminae, from which circumstance 

 they have obtained their name. 



LA'MINA. (lamina, Lat.) A thin plate or 

 scale ; a thin layer of a stratum. This 

 word is generally used in the plural, 

 laminae. 



LA'MINATED. (laming Fr.) Disposed in 

 layers, placed one over another. 



LAMINA'TION. Arrangement in layers. 

 Lamination prevails amongst all the va- 

 rieties of gneiss, mica schist, chlorite 

 schist, hornblende schist, &c. It is often 

 observable in primary limestone, and 

 sometimes in quartz rock. All the mem- 

 bers of the carboniferous series display 

 lamination, though in unequal degrees. 

 " The coarse sandstones frequently," says 

 Prof. Phillips, "present oblique lamina- 

 tion, which, added to the irregularity of 

 'the beds, renders it often embarrassing to 

 say what is the true dip of such rocks. 



LAMINI'FEROUS. (from lamina and fero, 

 Lat.) Having a structure consisting of 

 laminae or layers. 



LA'NATE. ) (from lanatus, Lat.) Woolly; 



LA'NATED. $ covered with a sort of pube- 

 scence resembling short woolly hairs. 



LA'NCEOLATE. Lance-shaped; narrow and 

 tapering. 



1. In conchology, applied to a shell of an 

 oblong shape, and gradually tapering to 

 each end. 



2. In entomology, in describing the figure 

 of the superficies, when the base is not so 

 broad as the centre, and the lateral mar- 

 gins slightly, but equally, swollen, gradu- 

 ally tapering towards the apex, where if 

 terminates in a point, and the longitudina 

 diameter more than three times the length 

 of the transverse. Burmeister. 



3. In botany, applied to leaves of a nar- 

 row oblong form, gradually tapering to- 

 wards each end. 



LA'NCIFORM. (from lancea and forma 



Lat.) Spear-shaped ; lance- shaped. 

 LA'NDSLIP. A portion of land that has 



separated from the main body, in conse- 

 quence of long-continued rains, or the 

 expansive powers of severe frosts, and has 

 fallen to a lower situation. Landslips are 

 not uncommon on our coasts ; one of 

 great extent occurred some years since at 

 the back of the Isle of Wight, and another 

 is announced, though not of such magni- 

 tude, at Alum Bay, while I am writing 

 the present account. Landslips must 

 necessarily be often attended by fatal 

 consequences, as in the falls of avalanches. 

 We are informed that when the mountain 

 of Piz fell, in 1772, three villages, with 

 their entire population, were covered ; 

 and that when part of Mount Grenier, in 

 Savoy, fell, in 1248, five parishes were 

 buried, the ruins occupying an extent of 

 nine square miles. 



A'NGOUSTE. (Fr. sorte d'ecrevisse de 

 mer.) The name given by the French to 

 the Palinurus vulgaris of Leach ; the 

 cray-fish or thorny lobster. 

 IANI'FEROUS. (from lana, wool, and/ero, 

 to produce, Lat.) Bearing or producing 

 wool. 



IANI'GEROUS. (from lana, wool, and gero, 

 to bear, Lat.) Bearing wool. 

 LA'NTANE. (from XavQdvu, to conceal, 

 Gr.) A new elementary body, lately dis- 

 covered, making the fifty-fifth. See Ele- 

 mentary body. 



LANU'GINOSE. ) (from lanuginosus, Lat.) 

 LANU'GINOUS. $ In entomology, when 

 longish curled hair is spread over the sur- 

 face; covered with soft hair resembling 

 wool. 



LA'PIDES JUDA'ICI. A name given to cer- 

 tain fossil spines of echinites, formerly 

 supposed to be petrified olives. 

 LAPIDE'SCENCE. (from lapidesco, Lat. to 

 become stone.) Stony concretion ; the 

 process of being converted into stone. 

 LAPIDE'SCEMT. Growing or turning into 



stone. 



LAPIDIFICA'TION. (lapidification, Fr. from 

 lapis, a stone, and fio, to make or be- 

 come, Lat.) The conversion into stone 

 of some other substance ; the act of form- 

 ing stone. 

 LAPI'DIFY. (lapidifier, Fr.) To convert 



into stone ; to form stone. 

 LAPI'DIFIED. Converted into stone ; form- 

 ed into stone. 



LAPI'LLI. (lapillus, Lat.) Volcanic cin- 

 ders, abounding in minute globular con- 

 cretions. 



LA'PIS LA'ZULI. The Lazur stein of Werner; 

 Azure-stone of Jameson ; Lazulite of 

 Haiiy ; Dodecaedrischer Kuphon-spath 

 of Mohs. When lapis lazuli is pure, it is 

 a mineral of a fine azure-blue colour ; it 

 occurs in rhombohedral dodecahedrons, 

 massive r and disseminated. Structure 

 finely granular, almost compact ; fracture 



