PLANT-HOUSES. 



495 



front and ends should be cemented so as to hold water, in which pans may be 

 placed for the purpose of putting the orchideous pots upon them. All the 

 walks between the houses should be of stone, 4 ft. Avide, raised an inch in the 

 middle, with gratings in the gutters, 9 ft. apart. The roofs are to be sup- 



