D I P 



oF the corolla ; the third miperfea. Stigma two-lipped, 

 in three deep fegments. Seeds depreffed. 



I. D. Moraa. Labill. as above, t. 15. Br. n. i. 

 rMor3=a diandra ; Vahl Enum. v. 2. ,54.)-Nat.ve of the 

 fo'ith coaft of New Holland, flowering in May. 1 he 

 flowers are very (hort-lived, white ; the.r inner fegments 

 Tariegated. This plant differs from Patehsonia, (fee that 

 article,) chiefly in the irregularity of its fo-wer. 



DIPLOPOGON, from JitXoo.-, fwo-fola, and vuym, a 

 ^,^,.^._Brown Prodr. Nov. Holl. v. I. 176.— Clafs and 

 order, Triandrla Digynia. Nat. Ord. Gramma. 



Eif Ch. Calyx of two lax, membranous, awned valves, 

 fn.irle^flowered. Corolla of two valves • outer with three 

 awi^s, of which the middle one is twifted, unhke the relt ; 

 inner with two awns. 



I. D. fetaceus. Setaceous Diplopogon.— Gathered by 

 Ml-.' Brown, on the fouthern coaft of New Holland. A 

 grafs perfeftly refembling Amphipogox laguroides, (fee 

 that fupplementary article,) in habit and inflorefcetice, the 

 /pike being capitate, and the outermoft foivers likewife 

 abortive, compofmg a kind of involucrum. Brown. 



DIP-MICROMETER, and Dip-Sectok, inftruments 

 invented by Dr. Wollafl:on, to correal the variation of tlie 

 real dip from that given in the tables ; arifing principally 

 from the difference between the temperature of the fea 

 and that of the atmofphere. 



DIPODIUM, in Botany, from Ji; and mw,, alluding to 

 the two feparate ftalks, or feet, by which the mafles of 

 poUen attach themfclves to the ftigma. — Brown Prodr. 

 Nov. Holl. V. I. 330. — Clafs and order, Gynandria Monan- 

 dria. Nat. Ord. Orchide^. 



Eff. Ch. Calyx-leaves and petals uniform, fpreading. 

 Lip three-lobed ; dilk bearded ; bafe with a (hort fpur. 

 Column femi-cylindrical. Anther a terminal deciduous 

 lid. Mafles of pollen folitary in each cell, with an inner 

 lobe, each attached by a feparate thread to the gland of the 

 ftigma. 



Leartefs fmooth herbs, growing on the ground, with a 

 tViick, branching root. Bafe of the J}em ftieathed with 

 imbricated fcales, more diftant on its upper part, where- 

 they become braBeas. Flowers numerous, in a fimple 

 clufter, purple, very handfome. Two fpecies are men- 

 tioned. 



1. T). punSatum. Dotted Dipodium. Br. n. I. Den- 

 drobium punftatum ; Sm. Exot- Bot. v. i. 21. t. 12.) — 

 Lower fcales broadly ovate, acute, without a keel ; upper 

 fplit longitudinally. See Dendrobium, n. 10. 



2. D. fquamatum. Scaly Dipodium. (Cymbidium 

 fquamatum; Swartz Orch. in Schrad. N. Jeurn. v. i. 76. 

 Ophrys ? fquamata; Forft. Prodr. 59.) — Lower fcales 

 oblong, keeled ; upper undivided at the bafe. Br. — Native 

 of New Caledonia. Very nearly related to the firft. 



DIPSACE^, 1. 3, after cotyledons, infert — two. 



DIPTEROCARPUS, liv%^ou t-wo-winged, and xapTOf, 



fruit " Ga:rtn. v. 3. 51. t. 188." Roxb. Corom. v. 3. 



10. — Clafs and order, Polyandria Monogynia. Nat. Ord. 

 Gutliferis, JufT. affine. 



Eff. Ch. Calyx inferior, five-cleft ; two fegments fub- 

 fequently much enlarged. Petals fjve. Capfule ovate, 

 of one cell. Seed folitary. 



1. D. turbmatus. Wood-oil Dipterocarpus. Roxb. as 

 above, t. 213 — Native of various countries eaftward of 

 Bengal, flowering early in the hot feafon, and famous for 

 Its hquid balfam, much ufed for painting honfes and (hips. 

 This is copioufly procured by wounding the trunk, and 

 lighting a fire near the part. The tree is very large. 

 Leaves alternate, ftalked, ovate, acute, wavy or ferrated. 



DON 



fmootli, from four to twelve inches long. Flowers in 

 fimple, axillary clujlers, large, white, with yellow anthers. 

 Wings of the calyx in fruit ereft, oblong, three inches in 

 length. 



DISCHARGED Work. See PASXE-^or^ and Drs- 



CHAHGinG of Colour. \ 



DISS, 1. 6, r. 348, and 2590. 



Vol. XII. 



DISTHENE. See Mineralogv, Addenda. 



DISTILLATION, col. 7, 1. 22, &c. for Wetter r. 

 Welter. 



DISTILLED Waters, col. 2, 1. 23 from bottom, for 

 macerated water r. macerated in water. 



DISTILLER, col. 2,1. 12 from bottom, r. 24 Geo. II. 

 c. 40. Col. 3, 1. 19, r. 14 Geo. III. c. 73. Col. 5, 1. 24, 

 r. 43 Geo. III. c. 81. 



DIXFIELD, 1. 2, for Cumberland r. Oxford. Add— it 

 contains 403 inhabitants. 



DIXMONT. Add— Alfo, a town of Maine, in the 

 county of Hancock, having 337 inhabitants. 



DIXVILLE, a townfhip of Coos county, in New Hamp- 

 ftiire, having 12 inhabitants. 



DOAB, or Dooab, denotes in India any tradl of country 

 included between two rivers. 



DOCKING, in the Manege. See Curtailing. 



DODBROOKE, 1. ult. r. 112, and 942. 



DODECAGON. The demonftration annexed is mif- 

 placed, and belongs to Decagon. 



DOEMIA, ill Botany, Brown Tr. of the Wern. Soc. 

 V. 1 . 50. ( Daemia ; Ait. Hort. Kew. v. 2. 76. ) a genus of 

 the Jlfclepiadcic, differing from Sarcostemma, (fee that 

 article,) in having the outer crown of the ftamens in ten deep 

 fegments. It confifts of Cynanchum extenfum, Jacq. Ic. Rar. 

 t. 54, (to which C. bicolor, Andr. Rep. t. 562. is very nearly 

 related,) and Jifclepias cordata, Forfk. Egypt.-Arab. 49. 



DOLGELLY, col. 2, 1. 21 and 22 from bottom, r. 537 

 and 3064. 



DOLOMITE. See Mineralogy, Addenda. 



DONCASTER, col. 2, 1. 26 from bottom, r. 1438 a»d 



6935- 



DONEGAL, in America, 1. i, r. four ; 1. 3, r. 3 1 56 and 



■2.\\1 ; 1. 4, 1327. Add — And one in Butler county, hav- 

 ing 671 inhabitants. 



DONIA, in Botany, fo named by Mr. Brown, in memory 

 of the late Mr. George Don, of Forfar, a moft acute and 

 indefatigable Scottith botanift. — Br. in Ait. Hort. Kew. 

 V. 5. 82. Purfh 5 59. — Clafs and order, SyngeneJJa Polygam'ta- 

 fuperjiua. Nat. Ord. Compojitx, Linn. Corymb'tfere, Juff. 



Eff. Ch. Receptacle naked. Seed-down briftly, deci- 

 duous. Calyx imbricated, hemifpherical. 



1. D. glutinofa. Glutinous Donia. Ait. n. i. (After 

 glutinofus ; Cavan. Ic. v. 2. 53. t. 168. Doronicum glu- 

 tinofum ; Willd. Sp. PL v. 5. 21 15.) — Leaves ovate-oblong, 

 fharply ferrated, glutinous, as well as the upright -fcaled 

 calyx. — Native of Mexico. A green-houfe Jhrub, raifed 

 from Spanifh feeds by Mr. Lambert, flowering in Auguft 

 and September. The haves are feffile. Flowers terminal, ' 

 folitary, near two inches broad, yellow, with many rays. 



2. D. fquarrofa. Snake-headed Donia. Purth n. i. 

 Curt. Mag. t. 1706. — Leaves linear-oblono-, ferrated. 

 Calyx glutinous, its fcales with recurved cylindrical points. — 

 Difcovered by governor Lewis, in meadows on the banks 

 of the Miffouri, flowering in Auguft and September. Stem 



herbaceous. 



