3¥2 



ON THE CULTURE 



1 have known, in some hot-houses, great depre- 

 dations having been committed by this species : 

 for when they become numerous they do not con- 

 tent themselves in preying upon the foliage of 

 plants only, but even attack the fruit also. 



Crickets, too, are very prejudicial in hot-houses 

 on another account ; for they work the lime out 

 from between the courses of the brick-work in the 

 flues, &c. to their great detriment. 



Crickets may easily be destroyed by a mixture 

 of oatmeal, sugar, and arsenic. — A small quantity 

 of the latter will suffice for a large proportion of 

 the two former ingredients. 



The mixture should be laid in small quantities 

 in different parts of the stove. And it will be 

 necessary to repeat the applications at intervals 

 for two or three weeks, until the whole are ex- 

 terminated. 



To prevent accidents, great care should be had 

 in the application. 



Having now described the different species of 

 insects that infest hot-houses in general, I shall 

 next proceed to give directions for extirpating 

 them ; after which I shall lay down some rules for 

 keeping the hot-house tolerably clear of them. I 

 say tolerably clear, for it will be proper here to 

 observe, that the case of these indigenous insects 

 is very different from that of such as are exotic and 

 peculiar to the Pine-apple plant : for a hot-house 

 being once cleared of them, will remain so for ever, 

 provided no fresh plants are taken in from abroad 



