182 OSSEOUS SYSTEM. 



Q. What are the vital properties of the bones? 



+3. They have no animal sensibility in health, but ma- 

 nifest it in very great degree in disease. They have no 

 animal contractility; they are destitute of sensible organic 

 contractility. One would scarcely admit an insensible or- 

 ganic contractility in the firm structure of bones. 



Q. On what does the vitality of the osseous tissue de- 

 pend? 



/?. It is dependant on organic sensibility and insensible 

 organic contractility. These two properties they certainly 

 possess. 



Q. What influence has the obscurity of the osseous vital 

 properties on the diseases of that texture ? 



t/2. The vital properties of the bones are slow in the 

 production and prosecution of diseased action. 



Q. There are two sets of symptoms in all acute diseases, 

 what are they ? 



/?. Those that relate to the affected organ, and those 

 that sympathetically connect this organ with the vital 

 forces of other parts. 



Q. Are the bones readily acted on by the vital forces 

 of other organs? 



/?. They are not; they remain unaffected. Their vitality 

 does not admit of the sudden alterations in acute diseases. 



Q. In what part of the osseous tissue are the vital pro- 

 perties seated? 



/#. In the cartilaginous or gelatinous substance. 



Q. What produces a morbid brittleness in the bones? 



#. A deposition of phosphate of lime, in quantity dis- 

 proportioned to the gelatiiie. 



