376 BIOLOGY. 



2135. The arterial heart is the central, the venous 

 heart the peripheric. 



2136. The heart is the prototype of the muscular 

 system. All muscles must be a metatype of the heart. 



2137. The muscle is hollow. It is a cyst. 



2138. The muscular system is a manifold and serial 

 juxtaposition of fibrous cysts or of hearts. In this 

 respect the muscle has been formed in a corresponding 

 manner to bone. Both are rows of cysts. 



2139. But the muscle, as being the external fibrous 

 tunic, is the enveloping or external cyst. 



2140. In idea, the muscle can only directly envelop 

 the bones, and not the other parts, for it ranks upon the 

 same grade of development with the bone ; it is the 

 arterio-fibrous wall, while the bone is the internal arterial 

 wall. 



2141. Bone and flesh stand in antagonism like air 

 and earth. The muscle is that which is polarizing 

 moving, the bone what is polarized, moved. The muscle 

 is heart, the bone the moved blood. Bone and muscle 

 are related as that which is contained and what is con- 

 taining. The muscle is the wall of the cyst, the bone the 

 rigidified fluid that has been secreted from it. 



2142. As therefore the muscle is an individual cyst, a 

 heart, which cannot invest the whole body like a single 

 large cyst, so also must the muscular contents be only a 

 discrete cyst. The uninterrupted character of the bones 

 depends therefore upon that of the muscles, and the latter 

 upon the meaning of the heart. 



2143. A physiological rationale of the joints is accord- 

 ingly afforded in the heart. 



2144. A bone is a rigidified, ossified heart ; the osseous 

 system is a series of mutually dependent, alternately 

 ossified and non-ossified (arteriose and venous) hearts. 



2145. The muscular cyst includes the soft bone, or 

 the joint. 



2146. At its two extremities there is preponderance 

 of oxydation, whereby the soft osseous cysts are com- 

 busted into hard calcareous earth. 



