{ H7 ) 



wound with allies of tobacco, tho' that 

 of wood is equally eftedtual in deftroy- 

 ing the ova of thefe infedts. They 

 chiefly affedt. the flaves, who go bare- 

 foot, and whofe feet fuffer fuch terrible 

 ravages, that they are often lamed by 

 them. In thefe cafes, a cataplafm of 

 Caftile-foap and train-oil is the moft ef- 

 fectual application for their deftru&ion* 

 There is a Ipecies of thefe animals that 

 are venomous, and create fwellings and 

 inflammations ; happily, however, they 

 are uncopimon. 



She l l s, which make a consider- 

 able part of the Natural Hiftory of fome 

 Countries, will have little {hare in that 

 of Guiana* where the coaft is low, and 

 the (hcres muddy, the whole of their 

 extent ; fo that whatever (hells are 

 thrown on (hore are buried in the earth. 

 Sometimes, indeed, a fmall patch of 

 fend is found on the fhore, with Shells, 

 R 4 but 



