CONTENTS. 



Introduction 



r a ( ; k 



SECTION I. 



On the Structure and Growth of the Chorda Dorsalis and Cartilage 



1. Chorda dorsalis . 



2. Cartilage ..... 



10 

 ih. 

 15 



continuous tissues 



SECTION II. 



On Cells as the Basis of all Tissues of the Animal Body . 

 First division. On the ovum and germinal memhrane 

 Second division. Permanent tissues of the animal body 



Class I. Isolated, independent cells 



1. Lymph-corpuscles 



2. Blood-corpuscles 



3. Mucus-corpuscles 



4. Pus-corpuscles . 

 Class II. Independent cells united into 



1. Epithelium 



2. The pigmentum nigrum 



3. Nails . 



4. Hoofs 



5. Feathers 



6. The crystalline lens 

 Tissues, in which the cell-walls have coalesced with each other 



or with the intercellular substance 



1. Cartilage and bone .... 



2. The teeth ..... 

 Fibre-cells, or tissues, which originate from cells that l)ecom( 

 elongated into bundles of fibres 



1. Areolar tissue 



2. Fibrous tissue 



3. Elastic tissue 



Class III. 



Class IV. 



36 

 40 

 64 



67 

 ib. 

 ib. 

 70 

 71 

 73 

 ib. 

 77 

 80 

 81 

 82 

 87 



96 

 97 



ib. 



110 



ib. 



123 



124 



