GREEN-HOUSE PLANTS. 



ders, and clumps, laid out in the ground plan, and made 

 up with the bell earth)' materials, to the depth of three or 

 four feet, in which the fhrubs, trees, &c. arc regularly- 

 planted ; the whole of the roof being removed durinjr the 

 lummer to admit fredi air, and replaced on the approach of 

 the autumn, to remain until the following fammer renders 

 it unneceiTary. 



The green-houfes are at prefent moiily contrived to (land 

 in the pleafure-greund, near to thehoufe, if pofiible. TUey 

 (hould be upon a fomewhat eL'vated fpot, full to the fouth, 

 aad where tlie fim has accefs from its riling to its fetting : 

 thefe buildings are commonly of brick or (lone, having the 

 fronts and tops almoil wholly of glafs-work ; and ranging 

 lengthways eall and weft. They are generally conflruCted 

 upon fome ornamental plan. As to the general dimenfions 

 ill refpecl to length, width, and height, they may be from 

 ten to tifty feet, or more in length, according to the number 

 of plants to be contained ; and in width, from ten or fifteen 

 to twenty feet ; but for middling-houfes, fifteen or eighteen 

 feet is a fu£Ec?ent width ; and in height in the clrar, nearly 

 in proportion to the width. 



The walls on the backs and ends, particularly the former, 

 fliould be carried up two bricks thick ; and if more than fifteen 

 feet high, two bricks and a half thick ; at one end of the 

 back wall on the outfide, it is eligible to credl a furnace, 

 for burning fires occafionally, communicating with flues 

 within, ranging in two or three returns along the back wall, 

 having one flue running along t!ie front and end walls, raifed 

 wholly above the floor of the lioufe. 



The fronts of the buildings fliould have as much glafs as 

 poflible, and wide glafs doors fliould be made in the middle, 

 both for ornament and entrance, and for moving in and out 

 the plants. It would alfo be convenient to have a fmaller 

 entrance door at one end : the width of the windows for 

 the glafs faflies may be five or fix feet ; and the piers between 

 the faflies may be either of timber, fix, eight, or ten inches 

 wide, according to their height, or if of brick or ftone-work, 

 two feet wide at leaft, floping both fides of each pier in- 

 ward, that bv taking off" the angles, a free admiflion may 

 be given to the rays of the fun. For the fame reafon, the 

 bottoms of the fafhes fliould reach witliin a foot of the floor 

 of the houfe, and their tops almoil as high as the roof ; and 

 if brick or ilone piers two feet wide, fliutters may be hung on 

 tlie infide to fall back againll each pier. The roof may be either 

 wholly or only half glafs-work, next the front ; the other 

 half flated, efpecially if the upright or front piers are of 

 timber ; and the ftiutters to cover the top glafies may be fo 

 contrived as to Aide imder the flated roof : where the piers 

 are of brick or ftone, it is common to have the roof entirely 

 flated or tiled ; but flating is the mofl; ornamental for a half 

 or whole roof; and the cicling within fliould be white ; 

 which, as well as the whole infide wall, niuft b: well plaf- 

 tered and white-waftied, fo as to render it clean and neat. 



But in green-houfes of modern condruftion, in order to 

 have as much glafs as poflible in front, the piers between the 

 faflies are commonly of timber only, from fix to eight or ten 

 inches thick, according to the height, fo as to admit as 

 great a portion of light and heat of the iun as polhble, and 

 the roofs wholly of glazed frame-work. 



The green-houfes for large coUeclions of plants have 

 fometimes two wings of fmaller dimenfions, added to the 

 main buildings, at each end, in a right line, fcparated 

 fometimes from it by a glafs partition, with fliding faflies for 

 communication, and the front almoil wholly of glafs-work, and 

 half or whole glafs roofs. Thus, by thcfc additional wings, 

 •.;;'.• houfes confill of three divifions, whereby the different 



qualities and temperatures of the vartptis plants can be more 

 eligibly fuited. The middle, or main divition, may be for all 

 the principal and more hardy, woody, or ftirubbv kinds, 

 which require protcdlion cnly from froft ; one of tlsc wings 

 appropriated for the fucculent tribe, and the other to the 

 more tender kinds tliat require occafional heat in winter, 

 but which can live without the heat of a ftove or hct- 

 houfe. 



On whatever plans green-houfes are conflruftcd, t!.- 

 whole of the infi Je walls fliould be neatly iniiflied off wi'.h 

 plafter and wliite-wafli, and the wood-work painted white ; 

 the bottom being painted with large fquare paving tiles, or 

 fome other fimilar material. 



In the green-houfe there fliould be ilands, frames, of 

 treflela, which may be moved in and out, upon which 

 rows of planks may be fi\?d, fo as Lo place the pots or 

 tubs of plants, in regular rows, one above another ; bv 

 which their heads may be fo fituated as not to interfere with 

 each other : the lowcft rows of plants next the windows 

 being placed above four feet from them, that there may be 

 convenient, breadth left to walk in front ; and the rows of 

 plants fliould rife gradually from the finl, in futh a manner, 

 that the heads of the fv-cond rowbe entirely advanced abovethe 

 firfl, the llems only being hid ; and at the back of the lioufe 

 a fpace allowed of at leall five feet, for the conveniency of 

 watering the plants, and to admit a current of air round 

 them, that the damps occafioned by tiieir perfpiration, may 

 be the better diflipated ; which by being pent in too clofely 

 often occafion a mouldinefs upon the tender flicots and leaves, 

 and, when the lioufe is clofe fliut up, this ftngnating, rancid 

 vapour is often vei-y deftruClive ; for which reafon they 

 fliould never be crowded too clofe to each other, nor fhould 

 fucculent plants ever be placed among them. 



In PlaU Garthr.hig, {G reen-houjt) there is a ground plan and 

 elevation of an improved grecu-houfe in which _^. i. ftiews 

 the front elevation, Jig. 2. the ground plan, andjff. 3. a fec- 

 tion of the fam.e. 



And at_y^. 4. is another houfe of this kind upon another 

 plan. 



GliEEN' -HOUSE Plants, in Gardening, are fuch as require 

 the protection of this fort of building during the winter or 

 other feafon ; the following are the principal of the different 

 forts tiiat demand this kind of treatment. 



Succulent Kind. 



Agave, agave or American aloe ; comprifing common 

 gix'at American agave, with entire green leaves, and a 

 branching flower-flalk; — commonagave withftripedleavcs; — 

 Virginian agave, with narrower pale-green leaves. 



Aloe, AjVtcan aloe ; containing mitre-fhaped aloe-tree, or 



fword aloe ; — aloe fcrox ; — fan aloe 



foccotriue aloe;- 

 tongue aloe ; — 



foap aloe ; — partridge-breafl; aloe 



warted-tongue aloe ; — pearl-tongue aloe ; — cobweb-aloe; 



— hedge-hog aloe ; — cufhion aloe ;. — fpiral aloe ; — prntan- 



j;ular fpiral aloe ; — triangular fpiral aloe ;'— iris u\-aria 



aloe. 



Anthericum, fp'uler-iuort ; containing flirubby ftalked, 

 onion-leaved anthericum ; — aloe-leaved anthericuni ; — mock 

 afphodel anthericum. 



Cacalia, foreign coh's-foot ,* comprifing cacalia ficoides ; — 

 Kleinia or Indian cacalia ; — anteuphorbiuni cacalia ; — papil- 

 lary cacalia. 



Callus, mclon-tkifle ; containing caftus op-:ntia, or com- 

 mon Indian fig. 



Cotyledon, ncv l-rx-'ort ; containing round-leaved, Jong- 

 leaved, hemifplierical-leaved navel-wort. 



Crnjuhi, lejfer orpine ; containing fovera; fpecics. 



5 A 2 Euphorbia, 



