LIST OF ENGRAVINGS. 



VOLUME I. 



Fig. Page 



1 Rotifer redimvus, (from Muller) 62 



2 Vibrio tritici, (Bauer) 62 



3 Simple vegetable cells, (Slack) 67 



4 Fucus vesiculosuSy transverse section, (De Candolle) . . 67 



5 Ditto, longitudinal section, (id.) 67 



6 Compressed cells of vegetables, (Slack) 67 



7 Hexagonal and elongated cells, (id.) 67 



8 Elongated cells, (id.) 67 



9 Fibrous cells, (id.) 67 



10 Reticulated cells, (id.) 67 



12 Junction of cells to form a tube 67 



1 3 Beaded vessels 73 



14 Spiral vessels, or Tracheae 73 



15 Annular vessels 73 



1 6 Punctuated vessels 73 



17 Transitions of vessels from one class to another 73 



18 Woody fibres 73 



19 Nervures of a leaf 73 



20 Cells composing the cuticle, (De Candolle) 79 



21 Stomata magnified, (Amici) 79 



22 Arrangement of stomata in cuticle, (De Candolle) .... 79 



23 Roots terminated by spongioles, (id.) 79 



24 Cells composing a spongiole, (id.) 79 



25 Animal cellular substance 99 



26 Blood vessel 103 



27 Section of blood vessel, with the valves open 103 



28 Ditto, with the valves closed 103 



29 Striated surface of the scale of the Cyprinus alburnus, 



(Heisinger) 116 



