26$ CULINARY GARDENING. BOOK I* 



the thripes; others by compositions of various kinds, such as 

 soap-suds and sulphur, lime-water, &c. as the coccus, phalsena, 

 &c. Some are caught by artifice, as wasps, flies, mice, &c.; 

 others are devoured by the introduction of other animals, as 

 the grub by the rook, the snail or worm by the duck or gull, 

 &c. Blight* is most probably produced by insects, or is rather 

 a collection of small insects; sometimes it is removed by chang- 

 ing the situation of vegetables, and removing them to a more 

 open exposure; at other times by placing them in a more invi- 

 gorating soil; and very commonly by placing them in a higher 

 situation. Honey-dew is an exudation from vegetables, which 

 frequently breeds an immense collection of small insects upon 

 their surface; a more invigorating soil is often a complete cure 

 for this malady, particularly where it attacks young trees. 



Watering, in horticulture, is generally performed by the 

 hand, and either with the common watering pot, the syringe, 

 or the forcing engine. In many cases I think it possible 

 to accomplish it by a practice similar to irrigation, or by sub- 

 flooding. The last may be done by having a stratum of gravel 



* According to Sir Joseph Banks, Bart, and some others, mildew or rust in wheat 

 is occasioned by a parasitic plant that insinuates itself into the pores of the straw, 

 and thereby prevents the grain from obtaining its proper nourishment. Others 

 have supposed the yellowish red appearance on the straw of grain to be a mere ve- 

 getable tumour, occasioned by obstructed circulation, and the blight of the ear 

 only, to be produced by insects. 



