TO THE READER. 



Teohwioal Phbases and SorBNTiPio Words. — For the meaning of the 

 various Technical Phrases and Scientific Terms used in Pabt II., the 

 reader is directed to the Glossary appended to this work. 



Mbdioinbs. — ^Throughout the following pages the word " dilution" will fre- 

 quently occur. It is necessary to explain the term : a dilution of 

 medicine (to use a common form of expression) is medicine reduced in 

 strength. The 1st dilution of a medicine is made by mixing two ounces 

 by measure of the strong tincture with fourteen ounces of sprints of wine ; 

 the 2nd dilution, by mixing two ounces by measure of the 1st to other 

 fourteen ounces of spirit; while a Srd dilution consists of two ounces 

 of the 2nd to foiuHieen more of spirit. 



Aebenio is prescribed in most instances of the Srd dilution : experience 

 having proved that (as a general rule) it is not safe to use this remedy in 

 a stronger form. 



