Scale and other Parasitical Insects, sit 



parasitical insefts. At any rate wherever one is found 

 to any extent, the other is sure to be present to an equal 

 degree. It is well-known that, for value received, they 

 a6l as nurses to some kinds of scales. Many means are 

 recommended for their destru6lion, among which I may 

 mention the drastic resource of pouring hot water over 

 their nests. A bit of cord besmeared with tar and tied 

 round the tree a6ts as a check to their ascent. Another 

 remedy is to spread common tar oil on their paths ; and 

 camphor dissolved in alcohol and diluted with water, 

 sprinkled in their haunts, is also efficacious; 



Last but not least, although they cannot striftly be in- 

 cluded under our heading, may be mentioned Frugivorous 

 Bats, which destroy much of our mango and other good 

 fruits. One remedy to apply is to hang among the fruit 

 the prickly petioles of some of the pimpler palms — the 

 long thorns of which, penetrating the wings of the bats, 

 are an effe6tual prote6lion to the fruit. 



In conclusion let me say that in the remedies I have sug- 

 gested I have been thinkingchiefly of what, in trade phrase- 

 ology is called "Nursery Stock," that is plants of small 

 or comparatively small sizeand house plants, with which in 

 my daily work I am mostly cencerned, and to which the 

 remedy of hand washing, rubbing or brushing, is easily ap- 

 plied. For larger plants, growing in the open ground, reme- 

 dies more wholesale and quickly applied arerequired. In 

 these we are carrying out experiments at the Botanic Gar- 

 dens, the nature and results of which, with the Editor's kind 

 permission I will give in a future number, describing also 

 the less common predatory insefts not mentioned here, and 

 those which have not yet been scientifically determined. 



