458 
forces prevail, which is evidenced by the passage of certain 
elements into crystalline forms, others passing off by volatili- 
sation, solution, &¢., 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. 
Elements of Tissues softened, separated 
or separable from each other with 
greater facility than natural, all still 
recognisable. 
\ Disappearance in part or whole of 
5 
DEFINITE TISSUES. 
Cartilage, Bone, Muscle, &c. 
. HISTO-GERMS, OR TRUE HISTO- 
PLASTIC ELEMENTS, 
Cells. 
Fibres. 
Granules (Nucleoli, Nuclei). 
Physical Characteristics; Gra- 
nular Infiltration ; Appearance of 
Animalcules. 
Formation of Granules ; Granu- 
lar Corpuscles and Stroma; 
Hyaline Vesicles; Mem- 
brane and Stroma; Pecu- 
liar Elements. 
A-PLASTIC MORPHIC 
ELEMENTS. 
= { Hyaline Stroma; Hyaline ee 
| Membrane; Hyaline Ve- Granules; Granular Cor- 
8 sicles; Granular Stroma; puscles, and masses stiJl 
§ | Granular Corpuscles. retaining outlines of 
& | Primary Organic Gra- parts ; Crystals here 
~ | nules. and there. 
Albumen; Fibrine ; Casein ; Crystallization ; Volati- 
Gelatine; Hematosine; lization; Solution ; 
&e. &e. &e. &e. 
CH Oo NN iSsab ave aot, C.H.0O. 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 
