2S PLATE XI. 



mon Dor, or Clock, almoft devoured alive by them ; little except his 

 fiiell remaining ; yet, in this ftate it lived feveral days. There were 

 a nur.--' jr of fmall brown bags affixed by pedicles to its breaft, thighs, 

 and even feet; the microfcope difcovered thofe to contain each an 

 embryo, and the pedicle, no doubt, anfwered the part of an umbilical 

 chord, to extra6l nourifhment from the living creature. I per- 

 ceived on further infpedion their bafe penetrated the fhell, or entered 

 the apertures. 



Fig. I. Natural fize of the Tick and Embryo. 



Fig, 2. The upper fide, and Fig. 3. under fide, magnified. 



Gradual, from thefe what numerous kinds defcend, 

 Evading even the microfcopic eye ! 

 All Nature fwarms with life ; one wond'rous mafs 

 Of Animals or Atoms organized, 

 - "Waiting the vital breath, when Parent Heaven 

 Shall bid his Spirit blow. — ■ 



■ . — — Thefe, conceal'd 



By the kind art of fcrming Heaven, cfcape 

 The grofTer eye of man ; for, if the worlds 

 In worlds inclos'd, fhould on his fenfes bnrft. 

 From cates ambrofial, and the ne£lar'd bowl 

 He would abliorrent turn ; and in dead night 

 When fiknce fieeps o'er all, be {lunn'd with noifc. 



Thomsok'j Sbasoks, 



PLATE 



