. Le livre du jardin. Le jardinage. 824 fleur ouverte-jardin. L'échelle d'apple-pin (bromelice Coccus) infeste que fruits sous mauvaise culture. Aspidiotus echinocacti (bouche) - La femme beaucoup ressemble à A. nerii, seulement que le bouclier est plutôt oblongue, et d'une couleur plus sombre ; le mâle est oi^ange ou jaune, la nymphe, linéaire avec en poudre gris, et doublement froncés. Comme son nom l'indique, il se trouve sur la Echino- cactus, et aussi sur la plupart des autres cactus de la tribu. Comme il est niché parmi les épines et les angles dans le profond des plantes, sa destruction est difficile. Les fumées d'un foyer de stabilité

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. The book of the garden. Gardening. 824 OPEN FLOWER-GARDEN. The pine-apple scale (Coccus bromelice) infests that fruit under bad cultivation. Aspidiotus echinocacti (Bouche.)—The female very much resembles A. nerii, only that the shield is more oblong, and of a darker colour; the male is oi^ange or yellow, the pupa linear, powdered with grey, and doubly furrowed. As the name implies, it is found on the Echino- cactus, and also on most other of the Cactus tribe. As it nestles amongst the spines and in the deep angles of the plants, its destruction is difficult. The fumes of a hotbed of stable manure in a high state of fermentation is the only means we have found of destroying them, while in such an atmosphere most of the Cacti luxuriate during their growing season. The small brown scale (Aspidiotus proteus), fig. 268, had escaped the notice of entomologists Fig. 268.. SMALL BROWN SCALE. until about 1843, when it was detected and de- scribed by the writer of the entomological articles in the early numbers of the " Gardeners' Chronicle." It is said to be very abundant in plant-houses, and was first discovered on the leaves of aloes and amaryllises. It belongs to the second section above noticed, and is named proteus, from the variety of forms it assumes. In regard to the destruction of the scale insects in general, the late T. A. Knight tried a dressing of lime and flour of sulphur with beneficial effects. The brown limpet scale (Coccus patellceformis) is described as being the largest of the family that infests our plant-houses. It is, however, fortunately not very often met with; it is nearly allied to C. hesperidum, but is larger and of greater length. The females are in general found with their heads downwards, and vary very considerably in size and form, some being oval, others more elliptical, while some are slightly curved. The turtle scale (Coccus testudo), fig. 269, is found chiefly on tropical plants requiring a high temperature. The scale is ova

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