[ 8; ] 



quires no watering and the common Rice ; 

 are thefe various kinds of Rice different fpecies 

 or varieties only ? The culture, characters, and 

 fpecimens of each, if different, would be ne- 

 celfary. 



21. There is an elaftic gum, called Borra- 

 chio in Portuguefe, and Kaoutchuck in the 

 language of the natives near Cayenne in South 

 America, of which it is faid the Chinefe make 

 elaftic rings for lafcivious purpofes, but here 

 ufed by furgeons for injecting liquids, and by 

 painters for rubbing out black-lead-pencil marks. 

 Is this gum manufactured in India or China, and 

 from what plant, and in what manner, with 

 the different ufes it may be applied to? Is the 

 plant an Euphorbia or Apocynum ? 



22. What plants produce Gum Myrrh and 

 Gum Ammoniac, and how are they collected ? 



23. What plant affords the Gummi rubrum 

 ^ftringens from Gambia ? 



fit DOL'Ol 



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S E C T, 



