6 14 



Microscopical 



E S S AY S. 



This is filled with grey molecules, and is as broad as it is long 

 the apex truncated and ciliated, both angles of the bafe projecting 

 outwards, one fomewhat like a wart, the other like a finger. 

 Found in marfhy waters. 



297. Vorticella Papillaris. 



Vorticella ventricofa, antice truncata, papilla caudali & late- 

 rali hyalina. Ventricofe vorticella, the fore-part truncated, a 

 papillary tail, and a fplendid papillary excrefcence on the fide. 

 Is an inhabitant of marines, where the conferva nitida is met 

 with. 



298. Vorticella Sacculus. 



Vorticella cylindracea, apertura repanda, margine reflexo. 

 Cylindrical vorticella, the aperture broad and flat, the edge turned 

 ' down. 



A thick animalculum, every-where of an equal diameter, -and 

 filled with molecules ; the edge of the mouth bent back, the 

 hinder-part obtufe, fometimes notched and contracted, cilia to 

 be feen on both lijdes the mouth. 



299. Vorticella Cirrata. 



Vorticella ventrofa, apertura finuata, cirro utrinque ventrali. 

 "Ventrofe vorticella, the aperture finuated, two tufts of hair on 

 ^each fide of the belly. It is an inhabitant of the water in ditches. 



300. Vor- 



