jVl icros co pical Essays, 



examination; fome days after, all the fides were plain, without 

 any convexity, and divided into little fquare fpaces by lines ; 

 croffing each other. Found upon dunghills. 



116. Gonium Corrugatum. 



Gonium quadrangulare, albidum, medio correptum. Qua*- 

 drangular gonium, white, funk a little in the middle.. 



It is lomewhat of a fquare fhape, very minute, without any, 5 

 vifible vifcera, a little deprefled in the middle. It is found in va- 

 rious infufions ; in fome pofitions it appears ftreaked. , 



■ 117., Gonium Re&angulum;. 



Gonium reelangulum, dorfo arcuate. This gonium is reel* 

 angular, the hind-part arched.. 



It. differs from the preceding one but little, the angle at the bafe 

 a right one, the larger veficle is tranfparent, the reft green. 



118, Gonium Truncatum. . ' . 



Gonium obtufangulum, poflice arcuatum, Gonium with ob:-~ 

 tufe corners, the hind-part arched. 



Much larger than the foregoing, the fore-part is a ftrait line,-, 

 the fides forming therewith obtufe angles, the ends of theie fides 

 are united by a curved line ; the., internal .molecules are of a dark . 



green y 



