TABLE OF CONTENTS. 
PART SECOND. 
DESCRIPTION OF PLATES. 
IntTRopDUCTORY REMARKS : 
The lowest living Beings are Picnetubuy ee 
Structure of Cells 
Protoplasm . 
Am@pBa. (Plate II. Fig. 1.) 
Structure of : 
Method of taking Hood. 
Encysted Condition , 
Mode of Reproduction . 
Muicrococcr. (Plate IT. Fig. 2.) : 
Micrococci, Unicellular Vegetable Oieanisens 
Mode of Multiplication . 
Rapid Increase as the Result of Syoueieons Fission . 
Dimensions of Micrococci . 
Chromogenes, colored Micrococci 
Micrococci widely distributed in Nature 
Recognition of Micrococci . 
Brownian Movement 
Reproduction of Bacteria by Rienigtion of Hudosennus 
Spores ‘ 
Pathogenic Micrococci 
UNICELLULAR Ata. (Plate III. Fig. 1.) 
Multiplication by Binary Division . 
Alge, Water-Plants . 
Distinctive Characters of Alga ou Ties 
Protococcus nivalis 
Conjugation 
Fertilization of Higher Plants 
Motile Condition . 
Active Movements not a ‘Distngaisans Character ge 
Animal Organisms 
EvGLENA VIRIDIS. (Plate ITI. Fig. 2.) 
Animal or Vegetable? . 
Discovery of Mouth by Mr. Kent . 
Where found . , 
Encysted Condition . 
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