CONTEXTS 



SECTION I 



PAGE 



Phylum Protozoa . . ... 14 



Class 1. The Rhizopoda . . ... 14 



Example of the Class — Amceba proteus ... 14 



Class 2. The Mastigophora . . 34 



Example of the Cla.^s — Englcua viridis 34 



Class 3. The Infusoria . 45 



Example of the Class — Paramecium caudatum 45 



Class 4. The Sporozoa . . . 55 



Example of the Class — Moiiocystu agilis . . 55 



SECTION II 



The Metazoa 



Heart 



59 



Oosperm or egg ... 59 

 Male cell or sperm ..... 60 



Fertilisation ... 60 



Segmentation of the oosperm .... .60 



Germinal layers . 62 



Tissues, epithelium .... 63 



Glands, ducts ... .63 



Connective tissues . . . . 65 



Fibrous tissue . . . .65 



Fat . . . .65 



Cartilage ... . .66 



Bone ... 66 



Muscular tissue . . 66 



Nerve tissue, ganglia, nerves . . 66 



Organs . 66 



Exoskeleton . ...... 67 



Endoskeleton ... 67 



Organs of digestion . . 68 



Organs of respiration . . 70 



The blood . .... 70 



Blood vascular system ... 70 



71 



Organs of excretion ........ 71 



