DESCRIPTION OF COLOUEED PLATES. 

 PLATE I. Page 255. 



PROTOPHYTA. 



Fig. 1. Pezizabicolor 2. Truffle 3. Sphseiiaherbarum : a. piece of dead plant, with 



5. herbarum natural size ; b. section of same, slightly magnified ; d. Ascus with 

 spores, and paraphyses more magnified 4. Peziza pygmsea 5. Proliferous 

 form -of same 6. P. corpulasis; Ascus with spores and paraphyses, 

 merely given as a further illustration of structure in Peziza 7. Yeast, 

 good 8. Yeast, exhausted 9. Phyllactinia guttata 10. Yeast with fayus 

 spores and mycelium 11. Favus ferment, with torulse and bacteria-like 

 bodies 12. Puccinia-like-form in ditto, growing from saccharine solution 

 13. Aerozoa 14. Sporules, <fec. from eczema produced by yeast 15. Volvox 

 globator 16. Amoeboid condition of portion of volvox 17. Puccinia buxi 

 18. Ditto, more enlarged <17 to 20 illustrate Coniomycetes)lQ. JBcidium 

 grossularise, transverse section of leaf of currant affected by : a. spermo- 

 gones on upper surface ; ft. perithecia with spores 20. Phragmidium bul- 

 bosum, development of 21. Parmelia parietina, trans, section through a 

 spermogone, showing green gonidia and spermatia escaping 22. .tEcidium 

 berberidis, from leaf of berberry- 23. Vaucheria sessilis 24. Stephano- 

 sphsera pluvialis : a. Full-grown example, germ-cells spindle-shaped, with 

 protoplasmic elongations, ft. Resting-cell. c. division into four. d. Free 

 swimming ciliated young specimen, e. Amoeboid condition 25. a, 6, c, d, e, 

 f and g, Development of Lichen gonidia 26. Parmelia stellaris (Lichen), 

 vertical section through apothecium, showing asci, spores, and paraphyses, 

 with gonidia and filamentous medulla, a. Spermatophore with spermatia 

 27. Moss gonidia assuming amoeboid form. 



The intention of this plate has been, first to show illustrations of 

 various forms of Protophytes, as the lowest types of vegetable 

 structure ; (from 7 to 14), supposed modes of development or rudi- 

 mentary conditions ; and Confervoideee illustrated by Vaucheria in 

 the Siphonacese, f. 23, Stephanosphsera 24, and Volvox 15, in the 

 Volvocinese ; and their remarkable amoeboid conditions illustrated 

 by 16, 24 e, and 27. The protean forms assumed in development 

 by 7 to 14 ; 24 a to e ; 25 a to g, and 27. 



PLATE II. Page 274. 



PROTOPHYTA. AIGM. 



Fig. 27. Ceramium acanthonotum 28. Triploceras gracile 29. Cosmanum 

 radiatum 30. Micrasterias denticulata 31. Docidium pristidse 32. Calli- 

 thamnion plumula 33. Diatomacese, living : a. Licmophora splendida ; 



6. Achnanthes longipes ; c. Grammatophora marina. These figures are in- 

 tended to show the general character of the endochrome and growth of 

 frustule 34. Callithamnion refractum 35, Jungermannia albicans. b. re- 

 presents elater and spores 36. Leaf with antheridia, or male elements, which 

 are represented more magnified at a to the left of the figure 37. Ceramium- 

 echinotum 38. Pleurosigma angulatum, side view 39. Delesseria hypo- 

 glossum 40. Pleurosigma angulatum, front view, endochrome not repre- 

 sented 41. Ceramium flabelligerum. 



The intention of this plate is chiefly to show various forms of 

 Algse. The figures of Desmids, 28 to 33, illustrate the appearance 

 6 



