INTRODUCTION. 5 



pute, even in Objedts of a much 

 larger Size, upon a Mechanifm of 

 Veffels fo minute, that we may le- 

 curely reckon it among the Inexpli- 

 cables, tho' juftly furmifed by Mr. 

 Reaumur not to be a Faculty pe- 

 culiar to this Animal, and fince ex- 

 emplified in fome Sea- productions, 

 the Urticce and Star-fifh, by MefT. 

 Gerrard de Villars, JuJJieu, and o- 

 thers. As an additional Proof I have 

 now by me the Arm of a Star-fijh 

 repairing its Lofs, preferv'd in Spi- 

 rits, where the protruded Extremity 

 is diftindtly vifible, as not having ar- 

 rived to the Diameter of the reft of 

 the Arm, which with fome other 

 Objedts (whereof mention will be 

 made in the Body of this Effay) I 

 lately fent over to England for the 

 Satisfaction of the Curious, and fince 

 that have had the Honour of pre- 

 fen ting them to the prefer? t Worthy 

 Prefident of the Royal Society, as 

 well as feveral other eminent Members, 

 who upon Examination of them, par- 

 ticularly the Milt-vefTels of the Cala- 

 mary, were pleafed to encourage me 

 to the Publication of this Effay. 



B 3 Its 



