504 Microscopical Essays, 



•parcels, from feven to forty in number, and ranged in a variety 

 of forms, fometimes in a 11 rait line, as in Fig. 14, then forming 

 the concave. Figure 13, at others moving in a zig-zag dne&ion, 

 as in Fig. 15 ; when at reft, they are generally in a quadrangular 

 form, and found in great plenty with the ulva latiffima. 



As this animalculum feems to have fome affinity with the hair- 

 like annua' of Mr. Baker, I think the reader will be better pleafed 

 to fee his defcription of it introduced in this place, than to have it 

 raifed into a new and diftinct fpecies. 



This little animal is extremely (lender, and not uncommonly 

 one hundred and fifty times longer than broad. It's refemblancc 

 to an hair induced Mr. Baker to call it the hair-like inf ect. The 

 body, or middle part, which is nearly f Ira it, appears in fome 

 compofed of fuch parallel rings as the windpipe of land animals 

 -confifts of, but feems in others fcaled, or rather made up of rings 

 that obliquely crofs each other. It's two ends are bent, or 

 hooked, pretty nearly in the fame degree, but in a direction con- 

 trary each to the other ; and as no eyes can be difcerned, it is 

 difficult to judge which is the head or tail. 



It's progreffive motion differs from that of all animals hitherto 

 defcribed, for notwithstanding the body is compofed. of many 

 rings and joints, it feems unable to bend them, or move directly 

 forwards ; but when it is inclinable to -change it's quarters, it can 

 move from right to left, or left to right, and proceed at the fame 

 time backwards or forwards obliquely ; and this it performs by 

 turning upon one end as a center, and defcribing with the other 

 the quarter of a circle, then it does the fame with the other end, 



and 



