THE FLORAL WORLD AND GARDEN GUIDE. 183 
The most troublesome are—the White Scale (Coccus bromelix), the 
Brown Scale (C. testudo), which mostly infests stove plants, and the 
Vine Scale (C- vitis), which soon spreads over the grape vines if 
unchecked, and does considerable mischief. The most effectual 
means by which plants of all kinds may be cleared of brown and white 
scale is to well wash the foliage and shoots with warm water and 
soft-soap ; the latter to be put in a saucer, and the brush or sponge 
to be dipped into it occasionally, as the work of washing proceeds. 
A lump of Gishurst Compound may be employed in a similar 
manner to the soft-soap, or the plants may be washed with a solution 
of Gishurst, or other of the insecticides prepared according to the 
directions accompanying them. Merely dipping the plants in a 
solution of either of the insecticides is of very little use, for the 
simple reason that they cannot be employed of a sufficient strength 
to be effectual. To thoroughiy wash a house full of plants is very 
tedious, but it the scale is allowed to obtain a firm foot-hold it must 
be done, or the plants will become worthless. 
Grape vines that become infested with scale must, after their 
winter pruning, have all the loose bark removed, and the canes and 
spurs be carefully examined, and every insect discernible removed. 
After this has been done, thoroughly scrub the bark, without injuring 
the eyes, with hot water and soft-soap, the brush to be simply dipped 
into the latter occasionally ; and then apply a dressing prepared as 
follows :—To two gallons of water add, when quite hot, half a pound 
of tobacco, quarter of a pound of soft-soap, and half a pound of 
sulphur, and allow it to stand for a day or so. Before using adda 
little lime or clay, to give it the consistency of ordinary paint, and just 
sufficient soot to make the mixture of a dull brown colour. Peach 
and other fruit trees infested with the brown scale should have 
much the same attention as the grape vines, but great care is 
necessary to prevent injury to the buds. The branches of vines and 
fruit trees infested with scale must be examined occasionally in the 
course of the summer, and the pests be dislodged with the aid of a 
piece of thin pointed stick. 
Turres (Thrips adonidwm) is like the red spider, a very trouble- 
some pest, as it increases very quickly and is difficult to kill. Green- 
house azaleas are especially liable to its attacks, and if it is allowed 
to go unchecked for any length of time the plants will be very 
seriously injured. Grape vines, melons, and cucumbers are also 
frequently infested, and the insects usually find their way to plants 
suffering from an insufficiency of moisture at the roots, or that have 
been kept in a close, dry atmosphere. The best preventives are a 
proper supply of water to the roots, abundant ventilation, and a 
moderate degree of atmospheric humidity. Fumigating plants in- 
fested, with tobacco or tobacco paper, in much the same manner as 
advised for the aphids, is an exceedingly good remedy. For destroy- 
ing thrips upon azaleas, Mr. John Frazer, of the Lea Bridge 
Nurseries, states that in his establishment the following mixture has 
been found the best remedy :— 
Take five or six pounds of soft-soap and dissolve it in about 
twelve gallons of rain water, then add a gallon of strong tobacco 
June. 
