( 366 ) 

 TABLE XXXVIII. 



Systematic Survey of the Sequence, according to Age, of the Human 



Tissue-groups. 



(Phylogenetic Classification of Vertebrate Tissues.) 



FIRST GROUP: PRIMARY TISSUES (Epithelium). 



1. First Histological Stage of Evolution. 

 I. Covering-tissue (Epithelium). 



I. A. Skta-coveriig tissue (EpUkdium dwnaU). \\ ^g^^ggS** 



SSSSUJSSS)'* Gostrula (aBe T : S s « ° f «* — 



1.5. Intestinal covering tissue (Epithet, gastrale). (1. Ileal intestinal epithelium 



Intestinal layer, or Entoderm, of Gastrula < 2. Epithelium of the intestinal glands 

 (afterwards the intestinal-glandular layer) ( 3. (Earliest site of origin of egg-cell ?) 



SECOND GROUP: SECONDARY TISSUES. 

 (All derived from the Covering-tissue, or Epithelium.) 



2. Second Histological Stage of Evolution. 



II. Connective-tissue (Connectivum). 



II. C. Filling-up tissue (Tela conjunctiva) (softer f 2 " Yattv tissue^ 116 



[surrounding] connective tissue) j 3 ' Fibl . ous t , 8<ue 



„ „ _, ,. ^. /_,. ttj-n/c f 4. Chorda tissue 



II. D. Supporting tissue (Tela .skeletons) (firmer! Cartilaginous tissue 

 [supporting] connective tissue) j 6 Bone . t f S;SUe 



3. Third Histological Stage of Evolution. 



III. J?. Nerve-tissue (Tela 

 nerved). Original outer 

 portion of the nerve- -( 

 muscle cells of the 2 

 Exoderm I 



lll.F. Muscle-tissue (Tela 

 muscularis) Original 

 inner portion of the 

 nerve-muscle cells of 

 the Exoderm 



III. Nerve-muscle Tissue 



'1. Nerve-cells 



(Ganglion-cells) 



Nerve-fibres 

 (Nerve-tubes) 



1. One-celled muscle- 

 fibres 



2. Many-celled muscle- 

 fibres 



(Neuro-musculum). 



l.a. Peripheric nerve-cells (Pod cells of 



the sense-organs) 

 1. 5. Central nerve-cells (mind-cells) 



!2. o. Sheath less nerve-fibres (pale, or 

 medulla-less fibres) 

 2. o. Sheathed nerve-fibres (dark fibre 5 , 

 with medulla) 



(l.a. Smooth contractile fibre-cells 



(lb. Striped contractile fibre-cells 



j 2. a. Smooth muscle-masses 



( 2. b. Striped muscle-masses 



4. Fourth Histological Stage of Evolution. 

 IV. Vascular Tissue (Vasalium). 



1. a. Exoccelarium (Parietal Ccelom-epi 



IV. G. Vascularlining tissue 

 (Tela vasalis). Inner 

 wall-covering of the 

 Ccelom system 



1. Ccelarium 



(Coelom - epithe- 

 lium) 



thelium) (and secondary site of 

 origin of the sperm-cells ?) 

 b. Endoccelarium (Visceral ccelom-epi- 

 thelium) (and secondary site of 

 origin of the egg-cells ?) 



Endothelium of the lymph-vessels 

 Endothelium of the blood-vessels 



. Endothelium („ 



(Vascular epithe--? „ 

 lium) ( * 



IV. H. Lymph-tissue (Tela f 



lymphatica). Liquid J 1. Lymph (Colourless blood-cells and fluid intercellular substance) 

 contents of theCtelom 1 2. Bluod (lted blood-cells and fluid intercellular sub tance) 

 system [ 



