188 



THE MICROSCOPE. 



poduras " are any better than others. It is simply because they are 

 larger and more strongly marked. They are, or rather, were, ob- 

 tained from the species known as I^pidocyrtus curvicollis. These 

 Mr. Richard Beck obtained from a stone-heap in his brother's yard. 



FIG. 3. 



SPINES OF PODURA SCALES, X 7600 BY SPENCEr's 1-6 B. A. 130° ANU I-IO IN. OCULAR ; 

 CENTRAL LIGHT. 



At one time Mr. Joseph Beck had the stones removed, and since 

 then the poduras have not been seen. Mr. Richard Beck had ma- 

 terial enough on hand, however, for quite a number of mounts, so 

 that slides of these exceptionally good scales can still be obtained. 



MICROSCOPICAL EXAMINATION OF POWDERED VEG- 

 ETABLE DRUGS AS OBTAINED FROM 

 WHOLESALE DRUGGISTS. 



BY C. L. BECKER, PH. C, LINCOLN, ILLS. 



HAVING had my attention called to the adulteration of powdered 

 golden seal, through the September number of the Chicago 

 Druggist^ by Mr. C. B. Allaire, and also to the large list of adul- 

 terated powdered drugs reported by Mr. E. B. Stuart, in the same 

 number of the above journal, I made a microscopical examination of 



