CONTEXTS 



SECTION I 



PAGE 



PHYLUM PROTOZOA 14 



Class i. The Rhizopoda 14 



Example of the Class Amceba proteus .... 14 



Class 2. The Mastigophora 34 



Example of the Class Euglena viridis .... 34 



Class 3. The Infusoria 45 



Example of the Class Paramcecium caudatwn . . 45 



Class 4. The Sporozoa 55 



Example of the Class Monocystis agilis . 55 



SECTION II 



THE METAZOA 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 



Heart 71 



Organs of excretion 71 



