DRY 



[ -345 ] 



DUN 



DRYOSTA'CHYUM. (From drys, a tree, 

 and stachys, a spike. A genus of Stove 

 Ferns with yellow spores. Allied to 

 Drynavia.) 



Divisions ; peat and loam. Summer temp., 

 60 to 80 ; winter, 50 to 55. 

 J>. cauda'tum (tailed). May. Celebes. 1842. 



pilo'sum (hairy). May. Isle of Luzon. 1841. 



sple'ndens (shining)." May. Isle of Luzon. 



1842. 



DRY'PETES. (From drypto, to lace- 

 rate ; being a spiny shrub. Nat. ord., 

 Spuryeworts [Euphorbiaceo 1 .]. Linn., 

 2->.lJiceda i-Tctrundria. Allied to Sar- 

 cococca.) 



Stove evergreen shrub. Cuttings in sandy 

 loam, under a glass, in heat; peat and loam, 

 both fibry and sandy. Summer temp., 60 to 

 80 ; winter, 50 to 55. 



D. cro'cea (copper-coloured). 6. June. West 

 Indies. 1820. 



DRY'PIS. (From drypto, to lacerate ; 

 leaves armed with spines. Nat. ord., 

 Cloveworts [Caryophyllacese]. Linn., 

 5-Pentandria %-Trigynia. Allied to 

 Acanthophyllum. ) 



Hardy evergreen. Seeds; cuttings under a 

 hand-light in the early summer months ; re- 

 quires a dry situation, and equal portions of 

 loam, peat, and rough sand. 

 D. spino'sa (prickly). $ Pale blue. June. 

 Italy. 1775. 



DEY-STOVE is a hothouse devoted to 

 the culture of such plants as require a 

 high degree of heat, but a drier atmo- 

 sphere than the tenants of the Bark- 

 stove. Consequently, fermenting ma- 

 terials and open tanks of hot water are 

 inadmissible ; but the sources of heat 

 are either steam or hot-water pipes, or 

 flues. See Stove. 



DUBBING is a gardener's term for 

 clipping. The dubbinys of a hedge are 

 the parts clipped off with the shears. 



DucK's-FooT. Podophy'llum. 



DUMA'SIA. (Named after M. Dumas, 

 one of the editors ofAnnales des Sciences 

 Natnralles. Nat. ord., Leguminous 

 Plants [Fabacese]. Linn., 17-Diadel- 

 phia -Decandria. Allied to Clitoria.) 



Greenhouse evergreen twiners, from Nepaul ; 

 both introduced in 1824. Seeds sown in a hot- 

 bed in spring; cuttings of young shoots getting 

 firm, under a glass, and in sand, in a little bot- 

 tom heat, in April ; sandy peat and fibry loam. 

 Summer temp., 55 to /5 ; winter, 45 to 50. 

 D. pube'scens (downy). 6. Yellow. October. 

 *-=- villo'sa (long-haired). 6. Pale yellow. Oc- 

 tober. 



DuMB-CANE. Cala'diam Segni'mnn. 



DUMERI'LIA. (In honour of Constant 

 Dumeril, a French naturalist. Nat. 

 ord., Composites [Asteracere]. Linn., 

 IQ-Syngenesia \~JEtpudi9.) 



Stove evergreen shrub. Cuttings in sandy 

 soil, under a bell-glass; sandy loam. Summer 

 temp., 60 to 80 ; winter, 45 to 55. 

 D, panicula'ta (panicled). 3. Purple. August. 

 Columbia. 1825. 



DUNG. Under this title our attention 

 must be confined to the faeces and 

 urines of animals, and that one most 

 common compound, stable dung. 



Night-soil is the richest of these ma- 

 nures. It is composed of human fseces 

 and urine, of which the constituents 

 are as follows : Faces. Water, 73.3 ; 

 vegetable and animal remains, 7 ; bile, 

 0.9 ; albumen, 0.!) ; peculiar and ex- 

 tractive matter, 1.2 ; salts (carbonate 

 of soda, common salt, sulphate of 

 soda, ammonia- phosphate of magnesia, 

 and phosphate of lime), 2.7 ; insoluble 

 residue, 14.0. Urine. Urate of am- 

 monia, 0.208 ; sal-ammoniac, 0.459 ; 

 sulphate of potash, 2.112 ; chloride of 

 potassium, 3.674 ; chloride of sodium 

 (common salt), 15.060; phosphate of 

 soda, 4.267 ; phosphate of lime, 0.209 ; 

 acetate of soda, 2.770 ; urea and colour- 

 ing matter, 23.640 ; water and lactic 

 acid, 47.511. 



After stating the above analyses in 

 his excellent work On Fertilizers, Mr. 

 Cuthbert Johnson proceeds to observe, 

 that the very chemical composition 

 therefore of this compost would indi- 

 cate the powerful fertilizing effects 

 which it is proved to produce. The 

 mass of easily soluble and decom- 

 posable animal matters and salts of 

 ammonia with which it abounds, its 

 phosphate of lime, its carbonate of 

 1 soda, are all by themselves excellent 

 fertilizers, and must afford a copious 

 supply of food to plants. 



The disagreeable smell may be de- 

 j stroyed by mixing it with quick-lime, 

 I or still better with either chloride or 

 | sulphate of lime ; and if exposed to 

 i the atmosphere in thin layers in fine 

 ! weather, it speedily dries, is easily pul- 

 ! verized, and in this state may be used 

 i in the same manner as rape cake, and 

 I delivered into the furrow with the seed\ 



