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PREFACE* 



Besides the insects which infest the Pine-apple 

 plant, there are other kinds that infest hot-houses, 

 and which are very prejudicial to most kinds of 

 plants, viz. The Aphis, the Acarus or Red Spider, the 

 Thrips, the Oniscus or Woodlouse, the Formica or 

 Ant, and the Grillus or Cricket, A description of 

 these insects, and the different methods of destroy- 

 ing them, compose the third book. 



I was induced to make this addition to the work, 

 from the satisfactory result of some experiments I 

 made on the destruction of the Acarus or Red 

 Spider, which is well known to be very destructive 

 to many plants when kept under glass, particularly 

 to the Vine. 



Although some of these last-mentioned insects 

 are very common with us, yet as others of them are 

 not generally understood, I have given the classes, 

 and a description of each species (taken with little 

 deviation) from " Institutes of Entomology 5 * a pub- 

 lished by Mr. Yeats. 



Since the first edition of this work was published 

 (1779) there have been many improvements made 

 in the branch of gardening herein treated of, and 

 particularly in the use of steam in the Pine-stove 

 and in Forcing-houses. 



a This judicious introduction to entomology is selected from 

 the following celebrated authors, viz. Linnaeus, GeofFroy, Sco- 

 poli, and Schaeffer, to which the author has added many inge- 

 nious remarks. 



