LIST OF ENGRAVINGS. 



VOLUME I. 



Fig. Page 



1 Rotifer redivivus, (from Muller) .... 58 



2 Vibrio iritici, (Bauer) . . . . . .58 



3 Simple vegetable cells, (Slack) .... 61 



4 Fucus vesiculosus, transverse section, (De Candolle) . . til 



5 Ditto, longitudinal section, (id.) . . . . 61 



6 Compressed cells of vegetables, (Slack) . . .61 



7 Hexagonal and elongated cells, (id.) ... 61 



8 Elongated cells, (id.) . . . . . .61 



9 Fibrous cells, (id.) ...... 61 



10 Reticulated cells, (id.) . . . . . .61 



12 Junction of cells to form a tube .... 6.5 



13 Beaded vessels . . . . . .65 



14 Spiral vessels, or Trachese ..... 65 



15 Annular vessels . . . . . .65 



16 Punctuated vessels ..... 65 



17 Transitions of vessels from one class to another . . 65 



18 Woody fibres ...... 65 



19 NervLiresof a leaf . . . . . .65 



20 Cells composing the cuticle, (De Candolle) . . 69 



21 Stomata magnified, (Amici) . . . . .09 



22 Arrangement of stomata in cuticle, (De Candolle) . 69 



23 Roots terminated by spongioles, (id.) . . . .69 



24 Cells composing a spongiole, (id.) .... 69 



25 Animal cellular substance . . . . .82 



26 Blood vessel /...... 84 



27 Section of blood vessel, with the valves open . . .84 



28 Ditto, with the valves closed .... 84 



29 Striated surface of the scale of the Cyprinus albiirnus, (Hei- 



singer) . . . qo 



30 Ditto of thePerc«j?wm«a7/s, (Carus) . . . .92 



31 Imbricated arrangement of the scales of fishes, (Ileisinger) 92 



32 Section of the bulbs of hair, magnified . . .93 



33 Quill of Porcupine, (F. Cuvier) .... 96 



34 Transverse section of the same, (id.) . . . .96 



