260 



GARDEN FOES. 



of sulphur on the heated hot-water pipes. Where leaves 

 are badl}^ infested they should be sponged with soft soap 

 and water. Leaves that have a sickly hue should always 

 be carefully examined on the under sides, taking, at the 

 same time, prompt measures for the destruction of any 

 Eed Spider found thereon. Plant houses kept clean, 

 moderately moist, and properly ventilated, are rarely in- 

 fested with Red Spider. 



[i'hoTo: H. A. Plinth. 

 .S'CAJ-E INSECTS ON OLEANDER LEAVES. 

 The intects may b© seen fixed to the aides of the midrib of the back of the 



Sca.ie Insects. — There arc several kinds infesting 

 greenhouse plants. The most common species is the 

 Brown Scale. This is a reddish-brown insect, hemi- 

 spherical in shape, which infests the shoots and stems 

 of a variety of plants. The young Scale cling very closely 

 to the shoot, and are somewhat soft; the older ones have 



