ILLUSTRATIONS. 



FIG. PAGE 



1. Water-net Hydrodictyon 18 



2. A Brown Alga, or Kelp Macrocystis 20 



3. A Red Alga Plocamium coccineum 23 



4. Some Green Algae 23 



5. Castor-oil Plant Ricinus, Germination of Seed 26 



6. Germination of Pine Seed 28 



7. Germination of Some Common Dicotyledonous Seeds 30 



8. Germination of Acorn 31 



9. Germination of Some Monocotyledenous Seeds 35 



10. Castor-oil Plant, Cellular Structure 36 



11. Wild Broom Lotus glaber 45 



12. Eriogonum elongatum 45 



13. A Summer Composite Malacothrix tenuifolia 46 



14. Turkey -weed Eremocarpus setigera 47 



15. Plants of the Dry Season 40 



16. Plant Hairs under the Microscope 50 



17. Mould 53 



18. Lichens 55 



19. Some Common Fungi 58 



20. Early Seedlings 62 



21. Seedlings spread out to the Sun 63 



22. Early Growth from Underground Storehouses 65 



23. Chilicothe Micrampelis macrocarpa 67 



24. Wild Currant Ribes glutinosum 69 



25. Wild Gooseberry Ribes amarum 70 



26. Polypodium Californicum 73 



27. Some Early Fern Fronds 76 



28. Fragments of Spore-bearing Fronds 78 



29. Scouring Rush, or Horsetail Equisetum 82 



30. Young Ferns and Liverworts 83 



31. Peony Ptzonia Californica 86 



32. Buttercup Ranunculus Californicus 88 



