64 COOL OUCIIID GROWING. 



white and brown scales which make such sad havoc among 

 Aerides and Yandas ; still, if they should put in an appearance? 

 it will most likely be in the warm end among the Cattleyas 

 and Trichopilias. IE the plants are regularly sponged over 

 with tepid water, and kept free from dust and dirt, they are not 

 near so liable to the attacks of insect pests as they otherwise 

 would be, and the plants look all the better for the trouble. 



Some insecticides are very effective in the destruction of thrips 

 and green fly ; we have used " Fowler's " with success and 

 also " Frettingham's." Messrs. Parr & Atherton, of Notting- 

 ham, have registered an effective contrivance for applying the 

 latter kind in the form of fine spray, and by the use of this 

 invention a little of the compound is made to go a long way, 

 and it forces it in among flower-buds of the most delicate 

 description without injuring them in the slightest degree. 

 This latter is very useful when but a few individual plants are 

 affected, but when a large quantity of good-sized specimens 

 has to be cleaned there is no better contrivance than the 

 water-barrow we have figured. This can be half filled with 

 any useful insecticide and then the plants may be entirely 

 immersed so as to ensure, the death of every insect with which 

 it may be infested, or the plants may be held partly in the 

 liquid and syringed thoroughly without any of the compound 

 being wasted. Anyone who once possessed this useful con- 

 trivance would never care to be without it. I would caution 

 the unwary cultivator against the use of methylated spirits 

 for clearing Orchids of white and brown scale. It kills scale 

 without a doubt, but seriously disfigures the foliage operated 

 on, more especially if it gets caught by the sun's rays soon 

 after it is applied. The following are well-known methods 

 of capturing and destroying insects that infest Orchids 

 generally. 



For Cockroaches and crickets, place bell glasses, bottles. 



