458 



forces prevail, which is evidenced by the passage of certain 

 elements into crystalline forms, others passing off by volatili- 

 sation, solution, &c, and that in this way the final dissolution 

 of a tissue is accomplished, the several morphic changes which 

 take place probably facilitating and preparing the way for the 

 action of chemical forces. 



Lastly, it appears to me that the general scheme of the 

 formation or Histogenesis of organic structures, and their 

 final dissolution, or Histolysis, may be best represented in 

 their mutual relations and analogies by a triangular figure, such 

 as the following : — 



SCHEMA. 



DEFINITE TISSUES. 



Cartilage, Bone, Muscle, &c. 



. HISTO-GERMS, OR TRUE HISTO- 

 g PLASTIC ELEMENTS. 



$ [Cells. 



£ <j Fibres. 



•2 L^ ranu ^ es (Nucleoli, Nuclei). 



A-PLASTIC MORPHIC 

 ELEMENTS. 



Hyaline Stroma; Hyaline /"« 

 Membrane; Hyaline Ve- 

 sicles ; Granular Stroma,^ 

 Granular Corpuscles. 



Primary Organic Gra- 

 nules. 



Albumen ; Fibrine ; Casein ; 

 Gelatine ; Hsematosine ; 

 &c. &c. 



C. H. 0. N. S. P. M. &c. 



Elements of Tissues softened, separated 

 or separable from each other with 

 greater facility than natural, all still 

 recognisable. 



Disappearance in part or whole of 

 Physical Characteristics; Gra- 

 nular Infiltration ; Appearance of 

 Animalcules. 



«ft Formation of Granules ;' Granu- 

 lar Corpuscles and Stroma; 

 Hyaline Vesicles ; Mem- 

 brane and Stroma ; Pecu- 

 liar Elements. 



Granules; Granular Cor- 

 puscles, and masses still 

 retaining outlines of 

 parts ; Crystals here 

 and there. 



Crystallization ; Volati- 

 lization ; Solution ; 

 &c. &c. 



C. H. O. N. S. P. M. &c. 



Commencing from below, the left member of this scale 

 presents us with the ascending series, corresponding to the 

 growth and development or Histogenesis of Tissues, passing 

 upwards in order from the simple bodies, carbon, oxygen, &c., 

 through the organic compounds, albumen, fibrine, &c, till we 



