ADENOLOGY. THE ENDOCRINOUS GLANDS AND THEIR EXTRACTS 293 



8. Normal serum against hemorrhage. Hemoplastin? 



9. Liquid pollen extracts. 



Hydrated biologies (liquid proteins, protein sols) deteriorate more 

 rapidly than dehydrated biologies (dry proteins, protein gels), and on 

 first consideration it would appear desirable to use these products in the 

 dry state, but since they are to be administered hypodermically or intra- 

 venously, they must be in condition for immediate absorption and assimi- 

 lation (hence, in the form of protein suspensoids or sols). A protein 

 which has been dehydrated, that is, which has been changed from a sol 

 to a gel, is often not readily reconverted into a sol. Furthermore, the 

 physician cannot as a rule, take the time to prepare it properly. 



Every pharmacist and also every physician, should be familiar with 

 the consistency, color and odor of the biologies, in their normal state. 

 The physician should, for example, not use adrenalin which has become 

 pinkish in color, the normal being colorless. Glandular extracts deepen 

 in color with age and develop an animal odor. Normally clear prepara- 

 tions which have become turbid or flocculent, or which show a precipitate, 

 should not be used. It is true that the manufacturers observe every 

 precaution to insure against mishaps and all products are tested and exam- 

 ined before they are sent out, yet the physician as well as the pharmacist 

 should be qualified to judge of the quality and purity of the preparations. 



