ORCHID 



1165 



ioned method of hot water under natural circulation will 

 be found best, using the regulation S^^-inch pipe, run- 

 ning the flows along the back beneath the eaves and re- 

 turning along the floors 1 



See Fig. 1571, which 



fairly illustrates a properly constructed house. The 

 quantity of pipe required for heating a house depends 

 upon the location and degree of heat desired. A slab <ir 

 board should be placed along the back of the side bi-ils 

 to throw the heat against the eaves and protect thi' 

 plants from direct heat before it has assimilated witli 

 the moisture of the house. 



The New Granadan house should be a leau-to struc- 

 ture of northern aspect, wilh a wall of stone or brick 

 along the south side to protect it from solar influence as 

 iiiu.-h ;,s jiovxiMe (see P^ig. 1572), The glass should be 

 Iirni, ,i,.,l in . aiivas roller shades raised 15 or 20 inches 

 iili.ix , th.. -i,i-, ,,ri framework. One side of the canvas 

 sh.iuM \n- taikiil along the top of the house, and the 

 other to a round wooden roller 3 or 4 inches in diameter 

 and as long as convenient to draw up; the two ropes 

 should be fastened to the ridge, carried down beneath 

 the shade around the roller, and up over the top to a 

 single pullcv ii.:ir tin- i-iids; thence through a doubl 

 pulley in thr ,(.iii,.i- :i,,,l down over the top of the h 1 

 to the giMuiiil. r,v tin -(■ Ti>pes the shade can be a 1 

 and low. rr,l in , l,Micl\ and bright weather at w 11 ( 

 Pig. 157.!). SuIkI IicmIs and piping similar to the tl 

 Orchid houses can be used, or as in Fig. 15 1 

 flow and return down each side connected w tl 1 

 so that either or both sides may be used as d d 



Shading of some sort on the glass is neces y f U 

 Orchid houses from early Februarv until No I 



1573. Cross-section of Ne 



and in some cases also during the winter months, to 

 protect the plants from the sun. It may be either of 

 canvas, as in Fig. 1574, or consist of whitewash or paint 

 applied directly to the glass. Whitewash made from 



fresh lime is perhaps the best to use, as it is easilv re- 

 moved in the fall. The hrst application in February 

 should be light, following it with a second coat a month 

 later, and, if necessary, a third one in July. This will 

 wear off gradually and in most cases should be entirely 

 remo^ rd durmg De ml er It is easily removed with a 

 stiff i r h Tl ro Tr il patented shadings 



III II 1 1 Groups —Orchids are 



t 1 1 I I 1 



wh 1 „ \ o tl 

 moit or less dirtctl\ i 

 usu lUv attach them 

 greater portion of tl 

 gases and occidental 



for 



VIZ 



embracing tho^ 



\ h h gr 



abundance on the rocks and trees of the moist wooded 

 tropics absorbing the various elements of their slowly 

 detomposiiig humus 



T >) tl il Oi hids grow at various altitudes and 

 are wi 1 Iv distubuted throughout both hemispheres 

 the f liri ^1 ns in 1 and deserts excepted Man) are 

 decidu us lu 1 tubei us rooted some grow from under 

 gr)unlrbiz mes thers ai i 1 1 ill at 1 decid 



uous w hile not a fev, ha\ e i i I 1 \ imples 



of terrestrial On hi Is are ( I Cyrto 



podium m st Cvml idiunis liums 



Disi (, hera ( \ei II I many 



M 1 II -\I I \ I 



574 Me hod of shad ng O h d house: 

 eq e a pe al 



tho i ft at n for 



i ne enu a Hab na a for 

 f und g w ng n 1 turfy 



h le oth nhab t woo led, 



1 O 1 1 nea Iv or quite 



I I on f om lack 



I f the nat ve 



I 11 ap oph tic 



of the 



\niB 



Spatho 





t h 



Blet a Cata etu n Cy topod ums Calanthes many 

 Lycastes, tropical Liparis and Miciostjlis, Phaius 

 Hamblotii and P. ttiberosus, Thunias and many other 

 deciduous and semi-deciduous species, should be grown 

 in the East Indian, or warm end of the Brazilian de- 

 partment, and during the resting period should be placed 



