C A 



158 



COC 



fests that fruit, the hibiscus, justitia, 



" C. adonidum. Mealy Bug. This 

 feeds on tropical plants, with which it 

 hasbeen introduced into our hot-houses, 

 especially Coffee, Cestrum, Justicia, 

 Carina, Musa, Renealmia, (^-c. ; but it 

 also is very injurious to the vine and 

 pine-apple. 



" C. testubo. Turtle Scale. This is 

 found chiefly on stove plants requiring 

 a high temperature. The scale is oval, 

 very convex, and dark brown." — Gard. 



evergreen shrubs. Cuttings. Sandy 

 peat. 



COAL. See Fuel. 



COAL ASHES. Sgk Ashes. 



COBffiA scandens. Half hardy ever- 

 green climber. Seeds or cuttings. Peat 

 and loam. 



COBURGHIA. Three species. Green- 

 house and half hardy bulbous peren- 

 nials. Division. Peat and loam. 



COCCINELL.E. Lady Birds. There 

 are about thirty species of this useful 

 and beautiful insect. Let no one de- 

 stroy a coccinella, for it is the greatest Chron. 



destroyer of the plant louse or aphis. ! C. Vitis. Vine Scale preys upon the 

 This is much better appreciated on the Grape Vine, both in the open air, and 

 continent than in England, for there ' under glass. It seems to be the same 

 the gardeners collect lady birds aiid { species which also attacks occasionally 

 place them upon rose trees, &c., in- the Peach, Nectarine, and Plum. It is, 

 fected with aphides. says Mr. Curtis, " a longish brown in- 



COCCOLOBA. Nineteen species, sect, which in old age assumes a black- 

 Stove evergreen trees. Leafy ripened ish-brown colour, and becomes hemi- 

 cuttings. Loam and peat. spherical and wrinkled. The females 



COCCUS. Scale Insect. The species are shield-like ; being convex above, 

 of this family are most usually, but not and flat or concave below; they are 

 exclusively, found upon the tenants of; furnished with six small legs, which, 

 our green-houses and hot-houses. The j when the insect is old, become part of 

 males are active, but the females usu- , the substance of the body. On the un- 

 ally fixed to a part of the plant; the i derside of the insect is a sucker, with 

 former having wings, and are so small i which it pierces the cuticle of the 

 as to require a magnifier to distinguish i plants, and extracts their juices. Soon 

 them distinctly: they then appear some- t after impregnation the female dies, and 

 what like a gnat in form. The females her body becomes a protection for the 

 are much larger, and in shape not tin- | eggs, which are covered with long white 

 like a bed-bug, but with a scaly skin. | wool, and sometimes completely enve- 

 When hatching they envelop them- | lop the shoots of the vines, or of plants, 

 selves in a woolly case. The eggs are growing underneath them. The males 

 oval, but no larger than dots. Brushing are furnished with four wings, and are 

 the stems and branches of trees and | apterous. Their powers ofpropagation 

 shrubs with a hand scrubbing-brush, are immense; and, where they once 

 will destroy many of these vermin, and ; become very numerous, they are ex- 

 if spirit of turpentine, with a painter's , ceedingly difficult to eradicate." 

 brush, is applied, so as to visit every As a genus of insects closely allied 

 cranny of the bark, the application is i to the Coca/s, and usually confounded 

 perfectly eifectuai. Smaller and more with it, is Aspidiotus ; and as all reme- 

 delicate plants in pots, may be placed i dial observations applicable to the one 

 under a sea-kale or other pot, with a ' are equally applicable to the other, the 

 little of the spirit in a saucer, and then ! prevailing kinds are here enumerated, 

 submitted to a gentle heat ; the vapour | "A.nerii. Oleander Scale is found 

 of the turpentine will destroy the insect in our stoves and green-houses, chiefly 



in an hour or two. If the first applica- 

 tion fails, the second will not fail. The 

 efficacy of a solution of soft soap in 

 thinning the ranks of this pest, arises 

 probably from the turpentine it con- 

 tains. 



" C. hesperidum is found in green- 

 houses, especially on orange trees. It 

 infests leaves as well as stems. 



*' C. bromeliiE. Pine Apple Scale in- 



on the Oleanders, Palma, Aloes and 

 Acacias. 



"A. ros(2. Rose Scale ; A. echino- 

 cacti. Cactus Scale ; A.laurJ. Sweet 

 Bay Scale; infest chiefly the plants by 

 the names of which they are distin- 

 guished. 



"j4. ostreceformis. Pear Tree Oyster 

 Scale, is found upon the pear tree. 



Scale is much more difficult to destroy 



