XI i CONTENTS. 



11. Rhabdoids (Plastoids). 396 223 



1 2. The Acanthospheres of the Characea. 397-399 224 



13. Starch-grains and Related Bodies. 400-415 225 



a. Starch. 400-410 225 



b. Floridean Starch. 411 230 



c. Phaeophycean Starch. 412 230 



d. Paramylum. 413 230 



e. Cellulin-grains. 414 231 



f. Fibrosin-bodies. 415 231 



14. The Mucus-globules of the Cyanophycea. g 416-417 232 



15. Tannin-vesicles. 418-421 234 



16. The Reaction of the Various Cell-constituents. 422-427 . . . 236 



17. Plasmolysis (Plasma-membranes). 428-434 238 



18. Methods of determining whether Certain Bodies lie in the Cyto- 



plasm or in the Cell-sap. 435, 436 240 



19. Aggregation. 437~44O 241 



20. Artificial Precipitates. 441-444 242 



21. The Loew-Bokorny Reagent for "Active Albumen." ^ .^5-443 . 244 



22. Protoplasmic Connections. 449-454 245 



23. Contents of Sieve-tubes. 455, 456 248 



APPENDIX. METHODS OF INVESTIGATION FOR BACTERIA. 



In General. 457 250 



I. The Observation of Living Bacteria. 458 250 



II. Fixing Methods. 459-465 251 



1. Cover-glass Preparations. 459-464 . . ... . . . 251 



2. Sections. 465 253 



III. Staining Methods. 466-476 . . . . . . ... . . .253 



1. Loeffler's Methylene blue . . . . 253 



2. Ziel's Carbol-fuchsin 254 



3. Ehrlich's Solutions 254 



4. Gram's Method 255 



5. Staining Tubercle Bacilli " 256 



6. Staining Spores 257 



7. Staining Cilia 257 



TABLES FOR REFERENCE 259 



LITERATURE LIST 265 



INDEX 28s 



