Microscopical Essays* 



whole, fometimes broken : when at reft, it occasionally twifts into 

 ^various folds. 



It may be obferved eafily with the ftrft lens of the Tingle micro- 

 fcope, and is probably the fame animalculum mentioned by 

 Leeuwenhoeck in all his works, as found in the dung of frogs, 

 and in the fpawn of the male libellula. It is to be found in 

 marfhy water in November, though but feldom. 



59. Vibrio Inteftinum. 



Vibrio gelatinofus, teres, antice anguftatus. This vibrio is 

 gelatinous, round, the fore-part fmal'i. 



It is cylindric, milk-coloured, and (lender towards the top, 

 both ends obtufe ; no traces of interlines to be difcovered, though 

 four or five fpherical eggs are perceived at the extremity of the 

 hind-part. It can draw the fore-part fo much inwards as to give 

 it a truncated and dilated appearance, fomething like a fpatula. 

 It's motion is flow and progreffive. They are found in marfhy 

 waters. 



60. Vibrio Bipunciatus. 



Vibrio linearis, aequalis, utraque extremitate truncata, globulis 

 binis mediis. Linear vibrio, of an equal fize throughout, both 

 ends truncated, and two fmali globules in the middle of the body. 



It is of a fmall fize, and rather lefs than the following animal- 

 culum, the body of a pellucid talc-Jike appearance, the fore and 



hind- 



