LIST OF ENGRAVINGS. 



VOLUME I. 



Fig. Page 



1 Rotifer redivivus, (from Muller) 53 



2 Vibrio fritici, (Bauer) 53 



3 Simple vegetable cells, (Slack) 58 



4 Fucus vesiculosus, transverse section, (De Candolle) .... 58 



5 Ditto, longitudinal section, (id.) 58 



6 Compressed cells of vegetables, (Slack) 58 



7 Hexagonal and elongated cells, (id.) 58 



8 Elongated cells, (id.) 58 



9 Fibrous cells, (id.) 58 



10 Reticulated cells, (id.) 58 



12 Junction of cells to form a tube 64 



13 Beaded vessels 64 



14 Spiral vessels, or Tracheae 64 



15 Annular vessels 64 



16 Punctuated vessels 64 



17 Transitions of vessels from one class to another 64 



18 Woody fibres 64 



19 Nervures of a leaf 64 



20 Cells composing the cuticle, (De Candolle) 69 



21 Stomata magnified, (Amici) 69 



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 86 



26 Blood vessels 90 



27 Section of blood vessel, with the valves open 90 



28 Ditto, with the valves closed 90 



28* Perpendicular section of the layers of the skin, (Breschet) 101 



