AND PHYSIOLOGY. 



13 



of which in arresting dangerous hemorrhages is well known. 

 Coagulation appears to be a vital process, that is, dependent on 

 life for its development, and not on chemical laws only. It can 

 be prevented by any thing that destroys life, such as poisons, 

 or a temperature too high, or too low. Fibrine does not exist 

 in the muscles. That which has been called such is muscu- 

 line, which is endowed with the vital property called contractil- 

 ity. Globuline occurs only in the red corpuscles of the blood. 

 Osteine is the substance from which gluten is made, by the 

 action of boiling water, for gluten does not naturally exist in 

 the body. Osteine is the essential organic element in bone. 



34. Hcmaline. — Hema- 

 tine is the coloring matter 

 of the blood, and though 

 iron is found in connec- 

 tion with it, all the iron 

 can be abstracted without 

 destroying the color. 

 Hence, that can not de- 

 pend on the iron. He- 

 matine is probably pro- 

 duced from certain red 

 crystals, occurring in the 

 red corpuscles. A group 

 of these crystals is here 

 shown. 



35. Proteine Compounds. — All the organic or coagulable 

 principles contain nitrogen, or rather, are composed essen- 

 tially of oxygen, hydrogen, carbon and nitrogen. Hence, their 

 value as food, since a greater part of the body is composed of 

 these elements. Albumen, fibrine, and caseine have been 

 termed Proteine Compounds, for they can easily be changed 



Is fibrine found in muscular tissue ? What is the proximate principle of muscular tis- 

 sue? Where does globuline and osteine occur? 84. What is the coloring matter of the 

 blood? Has iron any thing to do with its color? What is the ITematine produced from ? 

 35. What four simple elements make up all the organic principles? Why are albumen, 

 etc., termed Proteine compounds ? 



Fig. 3. 



