CONTENTS. 



PREFACE 5 



INTRODUCTORY CHAPTER 7 



Microscope, and Mounting of Objects. 7 



ACCESSORY APPARATUS 8 



Micrometers 8 



Diaphragm 8 



Illumination of Opaque Objects 8 



Polarized Light 9 



Mounting of Objects 9 



CHAPTER I. 



INFUSORIAL ANIMALCULES AND 

 PROTOPHYTES. 



Structure 17 



Classification 18 



Polygastrica 19 



Rotatoria. 19 



Eyes 20 



Reproduction 21 



Life and Resuscitation 22 



Influence of Temperature 22 



Air 23 



Poisons 23 



Phosphorescence of the Sea 24 



Colored Tracts of the Ocean 25 



PROTOPHYTES 26 



Monads 27 



Twilight Monad 27 



Grape Monad 27 



The Green-Eye Monad 28 



The Breast-plate Monads 28 



The Revolving Globe, or Volvox 29 



The Ray-Globe Volvox 30 



The Blood-like Astatia 31 



The Blood-red Euglena 31 



The Flowering-cup Protophytes 32 



Diatomacese or Diatoms 32 



The Gallionella 32 



The Striped Gallionella 33 



The Rust-like Gallionella 33 



The Navicula 34 



Green Navicula 34 



Golden Navicula 34 



The Swollen Eunotia 35 



The Pyxidicula 36 



Zigzag Diatoms 36 



The Palm, Fan-shaped Diatom 36 



Xanthidia 37 



POLYGASTRIC ANIMALCULES 37 



The Proteus 37 



The Bell-shaped Animalcules 38 



The Tree -Animalcules 40 



Trumpet Animalcules 41 



Purse Animalcule 43 



WHEEL-ANIMALCULES, OR ROTATO 

 RIA 43 



The Crown Wheel -Animalcule, or Ste- 



phanoceros 45 



The Beaded Melicerta, or Four-leaved 



Animalcule 47 



The Hornwort Limnias, or Water 



Nymph 50 



The Elegant Flower-shaped Animal 

 cule 50 



CHAPTER II. 



MICROSCOPIC FOSSILS. 



Microscopic Fossils in Chalk and Flint. 54 



Peat Bogs 57 



Foraminif era 57 



Mud-Banks 59 



Dust Showers 61 



CHAPTER III. 



MINUTE AQUATIC ANIMALS. 



The Polype 63 



The Round Lynceus, or Monoculus. . . 67 



