CH. II.] THE GREEN-HOUSE. 211 



that of the Gothic, without much incon- 

 venience to the plants : but this laft, from 

 the conftrudion of its arches, is of too 

 dark a nature for their welfare *. 



SECTION II. 



On the temperature of the Green-Houfs. 



LITTLE fire-heat is neceflary here ; ex- 

 cept in the time of a fevere ftorm, 

 or in long-continued dull weather, to dry 

 off damp. In the former cafe, the thermo- 

 meter, in the night, fhould not ft and above 

 50 degrees at any time 3 nor Ihould it be un- 

 der 40 degrees, as otherwife many tender 

 plants might fuffer. In the latter cafe, it 

 may fometimes be advifable to light pretty 

 ftrong fires, in order that large portions .of 

 air may be admitted : at which times, if 

 the thermometer ftand above 35 degrees, 

 it is fufficient. 



O 2 S E C- 



* In fome late defigns, where an elegant Green- 

 houfe has been wift^ed as a centre-piece, I have ihewii 

 a glafs, inftead of a flate or lead roof; a matter of evi- 

 dent utility, as thereby the plants enjoy both a perpen* 

 dicular and horizontal light. 



