( 36e ) 



TABLE XXXYIII. 



fljlfetmatio Stirvey of the Sequence, according to Age, of the 



Tissue-groTips. 



(Phylogenetic Classification of Vertebrate Tissues.) 



FIRST GROUP: PRIMARY TISSUES (Epithelium). 



1. FntsT Histological Stage of Evolutioh. 

 L Covering-tissue (Epithelium). 



I. A. Skl»^»T«ring tissue ^Epithelium cU^-male). (^ gfSs oAufrSlT"^ 



SkiB-layer. or Exodenn of Gastrula (after- ^ f^^^f s'ite^Vorigin of the f^^ 

 wMdB skin-sensory layer) I cells?) » -f«»"- 



I. B. Intestinal covering tiBBue (Epithet. gastraleX (\. Real intestinal epithelium 



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

 (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). 



Jelly-like tissu* 

 Fatty tissue 

 Fibrous tis'^na 

 Chorda tissue 



II. C. FilHng-Tip tissue (TeJa conjuiKti/va) (softer jg* 

 [surrounding] connective tissue) "i ^ 



II. D. Supporting tissue {Tela skeletaris) (firmer/ J; CaitU^inous tissue 

 [flupportmg] connective tissue) | g Bone-ttssue 



8. Third Histological Stage of Evolution. 



III. Nerve-muscle Tissue 



in.. 



m. 



I Kerre-tiesue (Tela 

 mervea). Original outer 

 portion of the nerre- 

 muBcle cells of the 

 Exodenn 



P. MuBcle-tissne {Tela 

 mtacularis). Original 

 Inner portion of the 

 nerve-muscle cells of 

 the Exodenn 



Nerve-cells 

 (Ganglion-cells) 



Nerve-fibres 

 (Nerve-tubes) 



One-celled muscle- 

 fibres 



Many-celled muscle- 

 fibres 



(Neuro-miksculum). 



[ 1. a. Peripheric nerve-cells (Rod-cells o! 



< the sense-organs) 



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



(2. a. Sheath less nerve-fibres (pale, or 

 medulla-less fibres) 

 2. 6. Slieathed nerve-fibres (dark fibres 

 with medulla) 



1. o. Smooth contractile fibre-cella 

 1 b. Striped contractile fibre-cell* 



2. a. Smooth muscle-masses 

 2. h. Striped muscle-masses 



4. Fourth Histological Stage of EvoLunov. 



IV. 



Vascular Tissue (Vasalium). 



I. a. 



IT.0. Vascular lining tissue 

 {Tela vasalis). Inner 

 wall-covering of the 

 OoBlom system 



fW.K. I^rmph-tissue {Tela ( 

 lymphatiea'). Liquid 1 1. 

 eentents of tlM C<elom 1 2. 



Ccelarium 



(Ccelom 



lium) 



epithe-^j b. 



Endothelium f 



(Vascular epitbe- < 



Uum) ( 



Exocoelarium (Parietal Ocelom-epl- 

 thelium) (and secondary site oi 

 origin of the sperm-cells H) 



Endocoelarium (Visceral coelom-eirf- 

 thelium) (and secondary site of 

 origin of the egg-cells })* 



Endothelium of the lymph-vessels 

 Endothelium of the blood-vessels 



') 





Lymph (Colourless blood-cells and fiuid intercellular 

 Blood (Red blood-cells and fluid intercellular substeaee) 



