PITS AND FRAMES, 127 
Plant-protectors may be of any length, and from 2ft, 
to 6ft. or so in width, and are extremely useful for 
protecting or encouraging the growth of plants of many 
kinds, both in pots and planted out. For hardening off 
bedding plants and similar purposes they are of course 
quite equal to frames, and on the whole, rather more 
convenient. 
RG 
eat Sa es 
atti _— = Zp, 
Fic. 84. 
An important point in both their construction and 
management is to provide against the lights, when opened, 
falling or being blown back, which is almost sure to lead 
to serious results, especially if a man or lad is stooping 
down to attend to the occupants. Unless, therefore, the 
lights are secured by some means, it is always best to have 
an assistant to hold each light up firmly when opened. 
Glazed Copings and Wall Covers.—A coping is 
merely a kind of shelf fixed along near the top of the wall, 
¢ 
