A METHOD FOR THE DIFFERENTIAL DETERMINATION 

 OF CRUDE DRUGS. 



The following- method for the differential determination of Crude 

 Dfrugs is based entirely on their more or less variable physical prop- 

 erties. That alone would preclude any assumption that the scheme 

 would give infallible results, like those of a chemical analysis. 

 Further uncertainty is introduced by the different meaning that a 

 description will give rise to in the minds of different readers. 



A combination of two or more properties may define a drug quite 

 discretely, but wdien inclusion or exclusion depend on a variable 

 factor many possibilities of a mistake arise. 



There are, however, limits to the variation of the properties and 

 within these limits it has been sought to place the scheme. 



Hence, even with its many defects it may serve its purpose at 

 some moment of necessity for one not deeply versed in Pharma- 

 cognosy, or if it fail in that, serve to stimulate improvements on 



this. 



J. A. STEEPENS, Phar. D. 



