Microscopical Essays. 



85. Cyclidium Fluitans, 



Cyclidium ovale cryftallinum. Oval cryflalline cyclidium* 



This is one of the fmallefl animalcula. The body of an oval, 

 or rather a fuborbicular fhape, depreffed, cryftalline ;. two fmall 

 blue fpaces may be difcovered, by the affiflance of the micro* 

 fcope, at the fides of this little creature. 



86. Cyclidium Glaucoma* 



Cyclidium ovatum, interaneis segre confpicuis.. Oval cyclir 

 dium, the interlines perceived with difficulty. 



A pellucid oval' body, both ends plain, or an oval membrane,, 

 with a diftincl well-defined edge; the interlines, when it is. 

 empty, are lb tranfparent, that they are with difficulty difcerned ;. 

 being full, they are manifefled by their green colour ; dark glo- 

 bules are difcoverable in the middle. 



In plenty of water it moves fv/iftly in a circular and diagonal: 

 direction ; whenever it moves {lowly it feems to be taking in 

 water, the interlines are then alfo in a violent commotion. Two 

 of the fmaller ones may often be perceived cohering to each; 

 other, and drawing one another by turns ; nor are they feparated. 

 by death, for they remain united even when the water is evapo- 

 rated. The unikilful in obfervation muft be careful left they 

 mi flake the (hade in a fingle one for a junction of two, or the.: 

 junclion of two for a copulation, for they generate by divifion. 



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8:7..CycIi 



