S'2‘2 MAP 
afh-grey; grey-wacke-flate and grey-wackc; greenjfti- 
grey, parting into yellow ; trap-rocks, fitch as granular 
primitive trap, green-ftone, green-ftone Bate, hornblende 
Hate, blackilh green inclining to blue; bafalt, greenilh- 
black ; porphyry-(late, pale greenifh-black ; amygdaloid, 
pale greenifh-black, (lightly inclining to brown; ferpen- 
tine, pale piftachio-green; talc and chlorite-date, pale 
grafs-green ; porphyry, pale reddifh-brown, (lightly in¬ 
clining to yellow; fienite, pale reddifh-brown, inclining 
to bluilh, that is, clove-brown pa(Ting into bluifh-red ; 
granular primitive lime-ftone, pale Berlin-blue ; compact 
primitive lime-ftone, fmalt-blue, faintly inclining to red; 
tranfition lime-ftone, indigo-blue, (lightly inclining to 
grey; fletz lime-ftone, pale blui(h-grey; chalk, blui(h- 
white; calcareous-tufa, fmoke-grey ; gypfum, pale (ky- 
blue ; rock-falt, and rocks from which falt-fprings iflue, 
pale-verdigris-green; coal-formation, pale blackifh-brown, 
approaching to yellowidt-brown ; alum-earth and brown 
coal, liver-brown; conglomerate and clay-ftone, pale 
orange-yellow, (lightly inclining to reddifh-brown; fand- 
llone, (traw-yellow; loam and clay, yellowifh-grey pafling 
into ochre-yellow ; iron-clay and calamine, pale ochre- 
yellow ; turf and peat, liver-brown ftreaks; bog-iron ore, 
ochre-yellow ftreaks. All thefe rocks may, likewife, be 
diftinguifhed by particular figns or fymbols; for which 
we refer to the Wernerian Tranfaftions. Not only parti¬ 
cular rocks, but alfo formation-fuites, may be reprefented 
in colours. Thus, the (late formation-fuite will be red 
(haded into blue, the blue into grey ; this latter into 
green, and the green into yellow. The inflammable fof- 
(rls, (ubordinate to thefe formations, will be dark brown; 
the lime-ftone formation-fuite will he blue, which will 
pals into grey, and laftly into white; the fait and gypfum 
formation-luites, which are allied to the preceding, will 
be greenifh-blue and bluiflt-green; the trap-luite, greenifh- 
black and blackifh-green, (haded into blue; the porphyry.- 
fuite, light brown ; the talc -and ferpentine-fuite, pale 
yellowifh-green. 
The relative pofitions of the different rocks, Werner 
exprelfed in the following manner: Boundaries of fu- 
per-impofed rocks are to be marked with a broad line of 
the fame colour as the rock, only darker ; and, where we 
are uncertain as to the fuperporttion ot the rock, the 
junftion is to be merely ftreaked. Beds, when they ap¬ 
pear at the furface, (hould have their boundaries diftin¬ 
guifhed by a broad, but darker, line of the fame colour 
as that of the rock of which they are compofed. When the 
beds are inclined, the lower fide (hould be marked with 
a broad line of the fame colour as the bed itfelf; but its 
tipper fide by a broad dark line of the colour of the rock 
that refts on it. Veins are reprefented by lines drawn in 
the direction of the veins of the diftrift. Metalliferous 
veins (hould be pointed out by red lines; and veins filled 
with mountain-rocks, by lines of the lame colour as the 
rock of which they are compofed. The dip of the ftrata 
is exprelfed by black coloured arrows, whole length (hould 
be in proportion to the angle ot inclination, and their di¬ 
rection to the point of the compafs towards which the 
ftrata dip or incline. When the ftrata are vertical, or 
under any angle from i;o° to 8o°,they are marked by two 
crofs lines, thus X ; horizontal ftrata, or ftrata under any 
angle from o to io°, by two lines crofting each other at 
right angles, and having a head of an arrow at each ex¬ 
tremity. The intermediate angles from 8o° to io°, are 
marked by Ample arrows, one-eighth, one-fourth, and half, 
of an inch in length. The arrow one-eighth of an inch in 
length intimates that the ftrata are inclined at any angle 
between 8o° and 6o°; the arrow one-fourth of an inch in 
length, that the ftrata are inclined at any angle between 
6 o° and 40 0 ; the arrow half an inch in length, that the 
ftrata are inclined at any angle between 40 0 and io°. 
The fir ft or (horteft arrow is meant to point out ftrata in- 
dined an angle of 70 0 ; the lecond arrow, ftrata undei* an 
angle of 50 0 ; the third arrow, ftrata under an angle of 
25 0 . Probably, according to Mr. Jamelon, an equally 
MAP 
convenient mode would be, to mark the angle of inclina¬ 
tion alorrgfide the arrow, and proportion its fize to the 
length of the map. Thus, if the map were on a large 
fcale, the arrow might be three-quarters of an inch long; 
if on a fmaller fcale, half an inch, or even one-quarter of 
an inch, in length. The higheft points on a mountain- 
range, Werner dirtinguilhes by a crofs, ; a level, by a 
figure refetnbling a door, 12 ; and a (haft, by a fmall pa¬ 
rallelogram, i—i . 
To MAP, v. a. To deJineate ; to fet down.—I am near 
to the place where they (hould meet, if Pifanio have map'-t 
it right. Shakefpeare's Cymbeline. 
MAPA'NA, a lake of Thibet, from which the Ganges 
is faid to iflue. The head of this majeftic river is coni- 
pofed of two ft reams, which run weftward ; and the fouth- 
ernmoft of thefe branches runs through two lakes, the 
fiift of which is named Mapana, and the fecond Lanken. 
MAPA'NIA,/ in botany, a genus of the clafs trian- 
dria, order monogynia, natural order of calamarice, Linn. 
(cyperoideas, JvJf.) The generic characters are—Calyx : 
involucrum many-flowered, of three very large, fpreading, 
equal, ovate, acute, fmooth, leaves, much longer than the 
flowers; perianthium inferior, of fix ovate acute concave 
leaves. Corolla: none. Stamina: filaments three, inferred 
into the receptacle, capillary, longer than the calyx ; an- 
therse oblong, quadrangular, of two cells. Piftillum: ger- 
men ovate, fuperior ; ftyle thread-lhaped, equal to the 
(tamens ; ftigmas three, awl-(haped. Pericarpium: none. 
Seed: one, roundifti, naked.— EJfential Chara&er. Involu¬ 
crum of three leaves ; perianthium inferior, of fix leaves; 
corolla, none; feed one, naked. 
Mapania fylvatica, a folitary fpecies ; native of marfhy 
forefts, about the rivers Aroura and Orapu in Guiana, 
where Aublet found it flowering in June. Root peren¬ 
nial, creeping, firm, throwing upfeveral Ample triangular 
Hems, about two feet high, rough with minute harfh points 
or prickles, and clothed at the bafe with feveral (lieathing 
imbricated membranous reddifh fcales or leaves ; the relt 
of the (tern is naked, but its top is crowned with the three 
fpreading involucral leaves, each five or fix inches long, 
obovate, pointed, ribbed, entire, fmooth, green, and fo- 
liaceous, in whole centre is llationed a round feflile head 
of feveral flowers. Aublet's Guiana, vol. i. p. 47.—Vahl, who 
had examined a fpecimen, juftly remarks, that the leaves 
of the calyx are not toothed, as Aublet defcribes them, 
but entire. 
MAPEL'LA, a town of Italy, in the department of 
the Mincio. 
MA'PERLEY, a village on the north fide of Notting¬ 
ham. 
MA'PERTON (North), a village in Dorfetfhire, near 
Bridport, with fome remains of an ancient chapel. 
MA'PERTON (South), near the above, is fituated on 
a high ground, two miles fouth-eaft of Beminlter. Here 
is a good houfe adjoining the church, belonging to the 
Mapertons; and the church is built very nearly to refem- 
ble it. 
The large parilh of Poorftock includes the above vil¬ 
lages. The village of Poorftock is fituated three miko 
fouth-eaft from South Maperton, and north of Bridport. 
Great part of this parilh and the adjacent country was 
formerly forell. About a mile north-eaft from it are 
traced the ruins of fome extenfive building, commonly 
called Poorftock-Caftle. Its church is ancient and large. 
MA'PERTON, a village in Somerfetfliire, near Win- 
canton. 
MA'PLE BECK', a village in Nottinghamlhire, on the 
north fide of Southwell. 
MA'PLE DOR'WEI.L, a village in Hampfhire, near 
Baftngftoke. 
MA'PLE DUR'HAM, a village in Hampfhire, near Pe- 
tersfield.—A village in Oxfordshire, neai the Thames; four 
miles from Reading. 
MA'PLE I'SLANDS, two fmall illands in Lake Supe¬ 
rior, near the ealt coalt. Lat, 46. 44. S. Ion. 84. 54. W. 
MA'PLE- 
