io6 Roses for Amateurs. 



the arsenite is best sprayed on in a fine mist. It will also 

 be necessary constantly to stir the insecticide. When a 

 preparation that kills by contact is preferred, then Gardo, 

 White's Abol, or Kerosene Emulsion used in the proportions 

 suggested by the makers should prove effectual. In addition, 

 a piece of paper covered with a sticky composition may be laid 

 beneath an infested tree, which may then be gently shaken, 

 when the insects will fall on the adhesive, and thence they 

 may be collected and killed. For the pith-feeding species 

 the shoots that die away should be burnt. 



Scale (Kermes rosce). 



Under glass this species must be regarded as a pest. It 

 takes up its abode on the bark, and plants badly attacked 

 soon begin to show signs of declining health. If one can 

 note it while on the wander the creatures are much more 

 readily dealt with than when the " scales " are formed that 

 cover the young generations. So firmly are they then 

 attached that a brush is required to remove them. Kerosene 

 Emulsion of a strength suited to the plant or plants being 

 dealt with, applied in the evening, will effect a clearance if 

 persisted in. 



Thrips. 



Small and inconspicuous though these insects are, the 

 amount of damage they are capable of inflicting upon Rose 

 foliage is out of all proportion to their size. When the 

 under-surfaces of the foliage are much infested the leaves 

 will appear as sickly as if attacked by Red Spider, while 

 the flowers are covered with minute rusty-looking spots. If, 

 however, the house in which the Roses are kept is periodically 

 fumigated with one of the vaporising insecticides the attacks 

 should be of a negligible quantity. So minute are the 

 creatures that a description would not enable a novice to 

 differentiate the parts by means of the unaided eye. Still, 



