Fig. 1. Arachnoidiscus—2. Actinocyclus (Bermuda)—3. Cocconeis (Algoa Bay)—4. Coccinodiscus (Bermuda)—5. Isthmia enervis—6. Zygoceros rhombus—7. Campilodiscus clypeus—8. Biddulphia—9. Gallionella sulcata—10. Triceratium, found in Thames mud—11. Gomphonema geminatum, with their stalk-like attachments—12. Dictyocha fibula—13. Eunotia—14. Cocconema—15. Fragilaria pectinalis—16. Meridion circulare—17. Diatoma flocculosum.
[PLATE XII.—Page 438].
MICRO-PHOTOGRAPH OF TEST DIATOMS.
Taken with Zeiss’s 3 mm. N.A. 1·40 by Mr. A. A. Carvell for the Author.
Fig. 1. Portion of Surirella gemma, magnified × 1,000—2. Broken Frustule of Pleurosigma angulatum, × 750—3 and 5. Triceratium favus ×—1,000—4. Navicula rhomboides × 1,300—6. Pleurosigma formosum, showing black dots—7. P. formosum, showing white dots, × 750.
[PLATE XIII.—Page 454].
PHANEROGAMIÆ—ELEMENTARY TISSUE OF PLANTS.
Fig. 1. Elementary ovid cells—2. Branching tissue—2A and 3. Spiral vessels from Opuntia vulgaris—4. Stellate tissue, section of rush—5. Mushroom spawn—6. Starch from Tous-les-mois—7. Starch from sago—8. Starch from rice—9. Wheat-starch—10. Rhubarb starch in isolated cells—11. Maize-starch—12. Oat-starch—13. Barley-starch—14. Section of Potato cells, filled with healthy starch—15. Potato starch more highly magnified—16. Section of Potato with nearly all starch absent—17. Potato with starch destroyed by fungoid disease—18. Ciliated spermagones—19. Hairs of stinging-nettle—20. Section of cellular parenchyma of ripe strawberry.