CIK 



journal of Pbarmacology, 



Devoted to the Advances Made in Materia Medica in its Branches. 



Pharmacy, Pharmacognosy, Chemistry, Botany, Pharmaco- 



Dynamics, Therapeutics and Toxicology, 



Published for the Alumni Association of the College of Pharmacy of the City of New York, 

 by The New Era Printing Company, 41 North Queen St.. Lancaster, Pa. 



Vol.. VII. OCTOBKR, 1900. No. lo. 



minimal Wools and Hairs.* 



LIBRAii 



NFV/ '' 



By Smith Ely Jelliffe, M.D., Ph.D., and Ernestine MolwiTz, Phar.D. 



(JA 



Contribution from the Microscopical Laboratory of the College of 

 Pharmacy of the City of New York. 



(Continued from page 216). 



Examination of Woven and Spun Fabrics. 



The microscopical examination of woven and spun fabrics has not only 

 for its object the qualitative determination of the fibers which constitute 

 it, but also by counting alone, or counting and measuring (taking into 

 consideration certain points yet to be described) to determine approximately 

 the quantitative composition of the same. 



Concerning the qualitative examination, usually there are not only but 

 few fibers to be taken into consideration, but there are also only four or five 

 sorts represented. Instances where more occur are rare. As a rule cotton/ 

 linen, hemp, jute, china, glass, sheep's wool, goat's hair, cow's hair. An- 

 gora, alpaca, vicugna, llama wool, real and Sussa silk alone are to be taken 

 into consideration. But cosmos and shoddy are to be considered when 

 examining woolen goods. 



For examination a square about 2 to 3 cm. in size should be taken and 



* Translated and arranged from " Der Microskopie der technisch verwendeten 

 Faserstoffe." By Franz Ritter von Hohnel. 



