Microscopical Essays. 



Thefe infects are as difagreeable from their naufeous flench, as 

 their unceafing appetites. Linnaeus thinks that they are not 

 originally of European growth, but were imported, from fome 

 other country. It has two brown fmall prominent eyes, two- 

 antennae, and a crooked probofcis, which lies clofe under the 

 breaft. Inftead of wings, we find on the firft ring of the belly, 

 two flat pieces which entirely cover it, and extend towards the 

 fides. Thefe plates, the trunk and the head, are amply fet with 

 hairs. The probofcis is divided tranfverfely into four parts, which 

 are probably fo many articulations ; this piece is beft feen on the 

 underfide of the bug. It has fix legs, each of which has three 

 joints ; the {kin is chagrined, and the feparation of the rings 

 ufually marked by a fmooth filming band. On the belly, at a 

 fmall diltance from the edge, you may perceive a fet of circular 

 fpots, two on each ring, except the laft ; thefe are the fpiracula. 

 Examined internally we find one large artery, a flomach, and in- 

 terlines. The inflant it perceives the light it endeavours to gain: 

 it's habitation, and feldom fails in making good it's retreat. 



Of the Ioufe. Various as are the antipathies of mankind, all 

 feem to unite in their diilike to this animal,, and to regard it as 

 their natural and mofl naufeous enemy. " Whenever wretched- 

 nefs, difeafe, and hunger, feize upon man, the Ioufe feldom fails to* 

 add itfelf to the tribe, and to inereafe in proportion, to the number: 

 of his calamities." 



When the human Ioufe is examined by the microfcope, its. 

 deformity fills us with difgufl. In the head we may diftinguifb 

 two fine black eyes, near this are the two antennae : the fore pars 

 of the head is rather long, the hinder more obtufe or rounder ; 



there 



