DESCRIPTION OF COLOUKED PLATES. 

 PLATE I.— Page 255. 



PEOTOPHYTA. 



Fig 1. Peziza bicolor— 2. Truffle— 3. Spheeriaherbarum : a. piece of dead plant, with 

 S. 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 — 0. 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 faviis 

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

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

 is. Aerozoa— 14. Spumles, Arc. 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) — 19. iEcidiuni 

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

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

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

 spermogone, showing green gonidia and spermatia escaping — 22. .dEcidium 

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

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

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

 swimming ciliated young specimen, e. Amoeboid condition— 25. a, b, 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 Confervoideae illustrated by Vaucheria in 

 the Siphonaceae, f. 23, Stephanosphaera 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. ALG.E. 



Fig. 27. Ceramium acanthonotum — 2S. Triploceras gracile— 29. Cosmarium 

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

 thanmion plumula— 33. Diatomacese, living : a. Licmophora splendida ; 

 b. 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 

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



b 



