( 366 ) 

 TABLE XXXVITI. 



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



Tissue-groups. 



(Phylogenetic Classification of Vertebrate Tissues.) 



FIRST GROUP: PRIMARY TISSUES {Evithelium) . 



I A. 



1. First Histological Stage of Evolution. 

 I. Covering tissue (^Epithelium). 



Skin-covering tissne (Eiwhelium dermale) (i' S'f'!;''^!-" S J.^r'*^ 



iSkin-laver. or Exode.m of Gastrula (after J ^ 9^ Ji Lf .^^ V • r .^ 



wards skin-sensory layer) ( 3. ^Earl.est site of ongm of the sperm. 



I. B Intestinal covering t\ss\\e {Epilhel. pastrale). (\. Real intestinal epithelium 



intestinal layer, or Kntoiierm, of Gastrula-j 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. Secoxd Histological Stage of Evolution. 

 II. Connoctive-tissue {Connect ir am). 



,T ^ T^;,- ..• fmj .■ , , f ( 1- Jelly-like tissue 



II. G Fillmg-up tissue (Tela covjuvctiva) (.suf.cr),^ F.utv tissnp 



\l.D. 



[surrounding] connective tissue) 



Supporting tis-ue {Tela skeU 

 [^upportillg] connective tissue) 



-> 2. Fatt3' tissue 

 ( 3. Fibrous lis-^ue 



„ .. • /ml 1 1 ,  s fr M- Chorda tissue 



Supportnig t.s-ue (reta_ste?./a.iO (firmer J ^ Cartilaginous tissue 



1 "■ ^"' >""■&'■ 

 ( 6. Bone-tis> 



ne 



III . ^. Nerve-tissue {Tda 

 nerved). Original outt-r 

 portion of the nerve- -^ 

 muscle cells of tue 

 Exoderm 



3. Third Histological Stage of Evolution. 

 III. Nerve-muscle Tissue (Neuro-musculuni). 



Nerve-cells 

 (Ganglion-ccUs) 



I. a. 



1 II. .^. Muscle-tissue (Tela 

 muscularis) Original 

 inner portion of the 

 nerve-muscle cells of 

 the Exodcrm 



Peripheric nerve-cells (Hod -cells oi 



the sense-organs) 

 Central nerve-cells (mindc IN) 

 iSheath less nerve-fibres (pale, or 



medulla-less fibres) 

 Slieathed nerve-fibres (dark fibre-*, 



with medulla) 



( ]. a. Smooth contractile fibre-colls 

 "(16. Striped contractile filire-cells 

 2. Many-celled muscle- ) 2. a. Smooth muscle-ma>ses 

 fibres ( 2. 6. Striped muscle-masses 



2. Nerve-fibre-* 

 (Nerve-tubes) 



1. One-celled muscle- 

 fibres 



( 



1.& 

 2. a. 



2.6. 



M.G. 



4. Fourth 

 IV 



Vascnlar lining tissue 

 (Tela vasalis). Inner , 

 wall-covering of the ' 

 Ccelom system 



Histological Stage op Evolution. 

 Vascular Txssue (Vasalium) 



Coelarium 



(Ccelom 



lium) 



eiiith 



J 



I. a. 



2 Endothrlium 



( 



IW.E. LjTnph-tissue (Tela f 

 lymphatica). Liquid J 1. 

 contents of the Ccelom 1 2. 

 Bystem ( 



I 9 rt 



(Vascular epithe-r "" . ' 

 lium) ( 2 "■ 



Exocoelarium (Parietal Coelom-epi- 

 theliura) (and secondary site of 

 origin of the sperm-cells .') 



Endocoelarium (Visceral ccelom -epi- 

 thelium) (and secondary site of 

 origin of the egg-cells ?) 



Fndothelinm of ttie lymph-vessels . 

 Endothelium of the blood-vessels 



Eymph (Colourless blood-cells and fluid intercellular substance) 

 Bluod (Red blood-cells and fluid intercellular sub tance) 



