JOURNAL OF MICROSCOPICAL SCIENCE, 



EXPLANATION OF PLATES VIII & IX. 



Illustrating Professor Bayley Balfour's Translation of 

 Pringslieim's Researches on Chlorophyll. 



Figs. 1 and 2. — Valllsneria spiralis. 



I. Chlorophyll-corpuscles after lying six days in dilute hydrochloric 

 acid and being steamed for eight hours. 2. Hypochlorin-formation on 

 chlorophyll-corpuscles ; a, mass with firmer embedded pieces ; i, nest 

 with pointed prolongations. 



Fig. 3. — Mnium. Burst chlorophyll-corpuscles after five minutes boiling. 



Fig. 4. — Taxus baccata. Hypochlorin-formation on chlorophyll-corpuscles 

 after twenty-four hours lying in dilute hydrochloric acid. 



Figs. 5 — 7. (Edogonium, sp. 



5. Hypochlorin-scales. 6. Hypochlorin-needle. 7. Hypoclilorin- 

 needles bleached. All highly magnified. 



Fig. 8. — Begonia, sp. Hypochlorin-formation on chlorophyll-corpuscles 

 after five months in dilute HCl. 



Fig. 9. — Draparnaldia, sp. Hypochlorin-filaments near amylum-bodies 

 after four weeks in same acid. 



Figs. 10 — 12. — Spirogyra crassa. 



10. Cell treated with dilute HCl. 



II. Nuclei from insolated cells with protoplasm-threads and plasma- 

 knots ; «, threads with knots ; b, central plasma with coating of 

 vesicles and knots. Ex.p. 20 and 21. 



12. Portion of warmed chlorophyll-band with oil-vacuoles near 

 amylum-bodies. 



Figs. 13 — 18. — Spirogyra, sp. 



13. Oil-vacuoles on bands after heating. 



14. Protoplasm-threads dilating around amylum-bodies. 



15. Wavy rods of hypochlorin after twenty-eight hours lying in 

 dilute HCl. 



16. Hypochlorin-needles after eight days in same acid. 



17. Isolated fragments of chlorophyll- bands with nests of hypo- 

 chlorin-needles and rods. 



18. Cells c and d insolated; whole filament subsequently stained 

 with iodine. 



Fig, 19. — Spirogyra jugalis. Cells a, b,c, d, insolated for some minutes ; 

 whole filament subsequently stained with iodine in potassium iodide, 

 and then excess of iodine washed out. 



